Data Preview 0.1

Data Preview 0.1 includes five tables based on the DESC’s Data Challenge 2 simulation of 300 square degrees of the wide-fast-deep LSST survey region after 5 years. All tables contain objects detected in coadded images.

position

Select astrometry-related parameters for objects detected in the coadded images, such as coordinates, footprints, patch/tract information, and deblending parameters. (29 columns)

Column Name	Data Type	Unit	Description [UCD]
objectId	long		Unique id.
coord_ra	double		RA-coordinate [pos.eq.ra]
coord_dec	double		Decl-coordinate [pos.eq.dec]
parent	long		unique ID of parent source
deblend_nChild	int		Number of children this object has (defaults to 0)
detect_isPrimary	boolean		true if source has no children and is in the inner region of a coadd patch and is in the inner region of a coadd tract and is not "detected" in a pseudo-filter (see config.pseudoFilterList)
extinction_bv	double	mag	Milky Way dust extinction, E(B-V)
detect_isPatchInner	boolean		true if source is in the inner region of a coadd patch
detect_isTractInner	boolean		true if source is in the inner region of a coadd tract
merge_footprint_i	boolean		Detection footprint overlapped with a detection from filter i
merge_footprint_r	boolean		Detection footprint overlapped with a detection from filter r
merge_footprint_z	boolean		Detection footprint overlapped with a detection from filter z
merge_footprint_y	boolean		Detection footprint overlapped with a detection from filter y
merge_footprint_g	boolean		Detection footprint overlapped with a detection from filter g
merge_footprint_u	boolean		Detection footprint overlapped with a detection from filter u
merge_footprint_sky	boolean		Detection footprint overlapped with a detection from filter sky
merge_peak_i	boolean		Peak detected in filter i
merge_peak_r	boolean		Peak detected in filter r
merge_peak_z	boolean		Peak detected in filter z
merge_peak_y	boolean		Peak detected in filter y
merge_peak_g	boolean		Peak detected in filter g
merge_peak_u	boolean		Peak detected in filter u
merge_peak_sky	boolean		Peak detected in filter sky
merge_measurement_i	boolean		Flag field set if the measurements here are from the i filter
merge_measurement_r	boolean		Flag field set if the measurements here are from the r filter
merge_measurement_z	boolean		Flag field set if the measurements here are from the z filter
merge_measurement_y	boolean		Flag field set if the measurements here are from the y filter
merge_measurement_g	boolean		Flag field set if the measurements here are from the g filter
merge_measurement_u	boolean		Flag field set if the measurements here are from the u filter

reference

Measurements for objects detected in the coadded images, including photometry, astrometry, shape, deblending, model fits, and related background and flag parameters. This table joined with the position table is very similar to the object table, but with additional columns. (236 columns)

Column Name	Data Type	Unit	Description [UCD]
objectId	long		Unique id.
coord_ra	double		position in ra/dec [pos.eq.ra]
coord_dec	double		position in ra/dec [pos.eq.dec]
base_SdssCentroid_x	double	pixel	centroid from Sdss Centroid algorithm
base_SdssCentroid_y	double	pixel	centroid from Sdss Centroid algorithm
base_SdssCentroid_xErr	double	pixel	1-sigma uncertainty on x position
base_SdssCentroid_yErr	double	pixel	1-sigma uncertainty on y position
base_SdssCentroid_flag	boolean		General Failure Flag
base_SdssCentroid_flag_edge	boolean		Object too close to edge
base_SdssCentroid_flag_noSecondDerivative	boolean		Vanishing second derivative
base_SdssCentroid_flag_almostNoSecondDerivative	boolean		Almost vanishing second derivative
base_SdssCentroid_flag_notAtMaximum	boolean		Object is not at a maximum
base_SdssCentroid_flag_resetToPeak	boolean		set if CentroidChecker reset the centroid
base_PsfFlux_instFlux	double	count	instFlux derived from linear least-squares fit of PSF model
base_PsfFlux_instFluxErr	double	count	1-sigma instFlux uncertainty
base_PsfFlux_area	double	pixel	effective area of PSF
base_PsfFlux_apCorr	double		aperture correction applied to base_PsfFlux
base_PsfFlux_apCorrErr	double		standard deviation of aperture correction applied to base_PsfFlux
base_PsfFlux_flag	boolean		General Failure Flag
base_PsfFlux_flag_noGoodPixels	boolean		not enough non-rejected pixels in data to attempt the fit
base_PsfFlux_flag_edge	boolean		object was too close to the edge of the image to use the full PSF model
base_PsfFlux_flag_apCorr	boolean		set if unable to aperture correct base_PsfFlux
base_PsfFlux_flag_badCentroid	boolean		General Failure Flag
base_Blendedness_raw_instFlux	double		measure of how instFlux is affected by neighbors: (1 - instFlux.child/instFlux.parent)
base_Blendedness_raw_instFlux_child	double	count	instFlux of the child, measured with a Gaussian weight matched to the child
base_Blendedness_raw_instFlux_parent	double	count	instFlux of the parent, measured with a Gaussian weight matched to the child
base_Blendedness_abs_instFlux	double		measure of how instFlux is affected by neighbors: (1 - instFlux.child/instFlux.parent)
base_Blendedness_abs_instFlux_child	double	count	instFlux of the child, measured with a Gaussian weight matched to the child
base_Blendedness_abs_instFlux_parent	double	count	instFlux of the parent, measured with a Gaussian weight matched to the child
base_Blendedness_raw_child_xx	double	pixel**2	Shape of the child, measured with a Gaussian weight matched to the child. Operates on the "raw" pixel values.
base_Blendedness_raw_child_yy	double	pixel**2	Shape of the child, measured with a Gaussian weight matched to the child. Operates on the "raw" pixel values.
base_Blendedness_raw_child_xy	double	pixel**2	Shape of the child, measured with a Gaussian weight matched to the child. Operates on the "raw" pixel values.
base_Blendedness_raw_parent_xx	double	pixel**2	Shape of the parent, measured with a Gaussian weight matched to the child. Operates on the "raw" pixel values.
base_Blendedness_raw_parent_yy	double	pixel**2	Shape of the parent, measured with a Gaussian weight matched to the child. Operates on the "raw" pixel values.
base_Blendedness_raw_parent_xy	double	pixel**2	Shape of the parent, measured with a Gaussian weight matched to the child. Operates on the "raw" pixel values.
base_Blendedness_abs_child_xx	double	pixel**2	Shape of the child, measured with a Gaussian weight matched to the child. Operates on the absolute value of the pixels to try to obtain a "de-noised" value. See section 4.9.11 of Bosch et al. 2018, PASJ, 70, S5 for details.
base_Blendedness_abs_child_yy	double	pixel**2	Shape of the child, measured with a Gaussian weight matched to the child. Operates on the absolute value of the pixels to try to obtain a "de-noised" value. See section 4.9.11 of Bosch et al. 2018, PASJ, 70, S5 for details.
base_Blendedness_abs_child_xy	double	pixel**2	Shape of the child, measured with a Gaussian weight matched to the child. Operates on the absolute value of the pixels to try to obtain a "de-noised" value. See section 4.9.11 of Bosch et al. 2018, PASJ, 70, S5 for details.
base_Blendedness_abs_parent_xx	double	pixel**2	Shape of the parent, measured with a Gaussian weight matched to the child. Operates on the absolute value of the pixels to try to obtain a "de-noised" value. See section 4.9.11 of Bosch et al. 2018, PASJ, 70, S5 for details.
base_Blendedness_abs_parent_yy	double	pixel**2	Shape of the parent, measured with a Gaussian weight matched to the child. Operates on the absolute value of the pixels to try to obtain a "de-noised" value. See section 4.9.11 of Bosch et al. 2018, PASJ, 70, S5 for details.
base_Blendedness_abs_parent_xy	double	pixel**2	Shape of the parent, measured with a Gaussian weight matched to the child. Operates on the absolute value of the pixels to try to obtain a "de-noised" value. See section 4.9.11 of Bosch et al. 2018, PASJ, 70, S5 for details.
base_ClassificationExtendedness_value	double		Set to 1 for extended sources, 0 for point sources.
base_ClassificationExtendedness_flag	boolean		Set to 1 for any fatal failure.
base_Blendedness_old	double		Blendedness from dot products: (child.dot(parent)/child.dot(child) - 1)
base_Blendedness_abs	double		Measure of how much the flux is affected by neighbors: (1 - child_instFlux/parent_instFlux). Operates on the absolute value of the pixels to try to obtain a "de-noised" value. See section 4.9.11 of Bosch et al. 2018, PASJ, 70, S5 for details.
base_Blendedness_flag	boolean		General Failure Flag
base_Blendedness_flag_noCentroid	boolean		Object has no centroid
base_Blendedness_flag_noShape	boolean		Object has no shape
base_PixelFlags_flag	boolean		General failure flag, set if anything went wrong
base_PixelFlags_flag_offimage	boolean		Source center is off image
base_PixelFlags_flag_edge	boolean		Source is outside usable exposure region (masked EDGE or NO_DATA)
base_PixelFlags_flag_interpolated	boolean		Interpolated pixel in the Source footprint
base_PixelFlags_flag_saturated	boolean		Saturated pixel in the Source footprint
base_PixelFlags_flag_cr	boolean		Cosmic ray in the Source footprint
base_PixelFlags_flag_bad	boolean		Bad pixel in the Source footprint
base_PixelFlags_flag_suspect	boolean		Source's footprint includes suspect pixels
base_PixelFlags_flag_interpolatedCenter	boolean		Interpolated pixel in the Source center
base_PixelFlags_flag_saturatedCenter	boolean		Saturated pixel in the Source center
base_PixelFlags_flag_crCenter	boolean		Cosmic ray in the Source center
base_PixelFlags_flag_suspectCenter	boolean		Source's center is close to suspect pixels
base_PixelFlags_flag_clippedCenter	boolean		Source center is close to CLIPPED pixels
base_PixelFlags_flag_sensor_edgeCenter	boolean		Source center is close to SENSOR_EDGE pixels
base_PixelFlags_flag_inexact_psfCenter	boolean		Source center is close to INEXACT_PSF pixels
base_PixelFlags_flag_bright_objectCenter	boolean		Source center is close to BRIGHT_OBJECT pixels
base_PixelFlags_flag_clipped	boolean		Source footprint includes CLIPPED pixels
base_PixelFlags_flag_sensor_edge	boolean		Source footprint includes SENSOR_EDGE pixels
base_PixelFlags_flag_inexact_psf	boolean		Source footprint includes INEXACT_PSF pixels
base_PixelFlags_flag_bright_object	boolean		Source footprint includes BRIGHT_OBJECT pixels
good	boolean		True if the source has no flagged pixels.
ext_shapeHSM_HsmSourceMoments_x	double	pixel	HSM Centroid
ext_shapeHSM_HsmSourceMoments_y	double	pixel	HSM Centroid
ext_shapeHSM_HsmSourceMoments_xx	double	pixel**2	HSM moments
ext_shapeHSM_HsmSourceMoments_yy	double	pixel**2	HSM moments
ext_shapeHSM_HsmSourceMoments_xy	double	pixel**2	HSM moments
ext_shapeHSM_HsmSourceMoments_flag	boolean		general failure flag, set if anything went wrong
ext_shapeHSM_HsmSourceMoments_flag_no_pixels	boolean		no pixels to measure
ext_shapeHSM_HsmSourceMoments_flag_not_contained	boolean		center not contained in footprint bounding box
ext_shapeHSM_HsmSourceMoments_flag_parent_source	boolean		parent source, ignored
ext_shapeHSM_HsmSourceMoments_flag_badCentroid	boolean		General Failure Flag
ext_shapeHSM_HsmPsfMoments_x	double	pixel	HSM Centroid
ext_shapeHSM_HsmPsfMoments_y	double	pixel	HSM Centroid
ext_shapeHSM_HsmPsfMoments_xx	double	pixel**2	HSM moments
ext_shapeHSM_HsmPsfMoments_yy	double	pixel**2	HSM moments
ext_shapeHSM_HsmPsfMoments_xy	double	pixel**2	HSM moments
ext_shapeHSM_HsmShapeRegauss_e1	double		PSF-corrected shear using Hirata & Seljak (2003) "regaussianization"
ext_shapeHSM_HsmShapeRegauss_e2	double		PSF-corrected shear using Hirata & Seljak (2003) "regaussianization"
ext_shapeHSM_HsmShapeRegauss_sigma	double		PSF-corrected shear using Hirata & Seljak (2003) "regaussianization"
ext_shapeHSM_HsmShapeRegauss_resolution	double		resolution factor (0=unresolved, 1=resolved)
ext_shapeHSM_HsmSourceMomentsRound_x	double	pixel	HSM Centroid
ext_shapeHSM_HsmSourceMomentsRound_y	double	pixel	HSM Centroid
ext_shapeHSM_HsmSourceMomentsRound_xx	double	pixel**2	HSM moments
ext_shapeHSM_HsmSourceMomentsRound_yy	double	pixel**2	HSM moments
ext_shapeHSM_HsmSourceMomentsRound_xy	double	pixel**2	HSM moments
ext_shapeHSM_HsmSourceMomentsRound_Flux	double		HSM flux
ext_shapeHSM_HsmPsfMoments_flag	boolean		general failure flag, set if anything went wrong
ext_shapeHSM_HsmPsfMoments_flag_no_pixels	boolean		no pixels to measure
ext_shapeHSM_HsmPsfMoments_flag_not_contained	boolean		center not contained in footprint bounding box
ext_shapeHSM_HsmPsfMoments_flag_parent_source	boolean		parent source, ignored
ext_shapeHSM_HsmShapeRegauss_flag	boolean		general failure flag, set if anything went wrong
ext_shapeHSM_HsmShapeRegauss_flag_no_pixels	boolean		no pixels to measure
ext_shapeHSM_HsmShapeRegauss_flag_not_contained	boolean		center not contained in footprint bounding box
ext_shapeHSM_HsmShapeRegauss_flag_parent_source	boolean		parent source, ignored
ext_shapeHSM_HsmShapeRegauss_flag_galsim	boolean		GalSim failure
ext_shapeHSM_HsmSourceMomentsRound_flag	boolean		general failure flag, set if anything went wrong
ext_shapeHSM_HsmSourceMomentsRound_flag_no_pixels	boolean		no pixels to measure
ext_shapeHSM_HsmSourceMomentsRound_flag_not_contained	boolean		center not contained in footprint bounding box
ext_shapeHSM_HsmSourceMomentsRound_flag_parent_source	boolean		parent source, ignored
ext_shapeHSM_HsmPsfMoments_flag_badCentroid	boolean		General Failure Flag
ext_shapeHSM_HsmShapeRegauss_flag_badCentroid	boolean		General Failure Flag
ext_shapeHSM_HsmSourceMomentsRound_flag_badCentroid	boolean		General Failure Flag
base_SdssShape_xx	double	pixel**2	elliptical Gaussian adaptive moments
base_SdssShape_yy	double	pixel**2	elliptical Gaussian adaptive moments
base_SdssShape_xy	double	pixel**2	elliptical Gaussian adaptive moments
base_SdssShape_xxErr	double	pixel**2	Standard deviation of xx moment
base_SdssShape_yyErr	double	pixel**2	Standard deviation of yy moment
base_SdssShape_xyErr	double	pixel**2	Standard deviation of xy moment
base_SdssShape_x	double	pixel	elliptical Gaussian adaptive moments
base_SdssShape_y	double	pixel	elliptical Gaussian adaptive moments
base_SdssShape_instFlux	double	count	elliptical Gaussian adaptive moments
base_SdssShape_instFluxErr	double	count	1-sigma instFlux uncertainty
base_SdssShape_psf_xx	double	pixel**2	adaptive moments of the PSF model at the object position
base_SdssShape_psf_yy	double	pixel**2	adaptive moments of the PSF model at the object position
base_SdssShape_psf_xy	double	pixel**2	adaptive moments of the PSF model at the object position
base_SdssShape_instFlux_xx_Cov	double	count.pixel**2	uncertainty covariance between base_SdssShape_instFlux and base_SdssShape_xx
base_SdssShape_instFlux_yy_Cov	double	count.pixel**2	uncertainty covariance between base_SdssShape_instFlux and base_SdssShape_yy
base_SdssShape_instFlux_xy_Cov	double	count.pixel**2	uncertainty covariance between base_SdssShape_instFlux and base_SdssShape_xy
base_SdssShape_flag	boolean		General Failure Flag
base_SdssShape_flag_unweightedBad	boolean		Both weighted and unweighted moments were invalid
base_SdssShape_flag_unweighted	boolean		Weighted moments converged to an invalid value; using unweighted moments
base_SdssShape_flag_shift	boolean		centroid shifted by more than the maximum allowed amount
base_SdssShape_flag_maxIter	boolean		Too many iterations in adaptive moments
base_SdssShape_flag_psf	boolean		Failure in measuring PSF model shape
base_SdssShape_flag_badCentroid	boolean		General Failure Flag
deblend_psfCenter_x	double	pixel	If deblended-as-psf, the PSF centroid
deblend_psfCenter_y	double	pixel	If deblended-as-psf, the PSF centroid
deblend_psf_instFlux	double	count	If deblended-as-psf, the instrumental PSF flux
deblend_deblendedAsPsf	boolean		Deblender thought this source looked like a PSF
deblend_tooManyPeaks	boolean		Source had too many peaks; only the brightest were included
deblend_parentTooBig	boolean		Parent footprint covered too many pixels
deblend_masked	boolean		Parent footprint was predominantly masked
deblend_skipped	boolean		Deblender skipped this source
deblend_rampedTemplate	boolean		This source was near an image edge and the deblender used "ramp" edge-handling.
deblend_patchedTemplate	boolean		This source was near an image edge and the deblender used "patched" edge-handling.
deblend_hasStrayFlux	boolean		This source was assigned some stray flux
deblend_psfflux	double	count	If deblended-as-psf, the instrumental PSF flux
modelfit_CModel_initial_instFlux	double	count	flux from the initial fit
modelfit_CModel_initial_instFluxErr	double	count	flux uncertainty from the initial fit
modelfit_CModel_initial_flux_inner	double	count	flux from the initial fit region, with no extrapolation
modelfit_CModel_initial_ellipse_xx	double	pixel**2	half-light ellipse of the initial fit
modelfit_CModel_initial_ellipse_yy	double	pixel**2	half-light ellipse of the initial fit
modelfit_CModel_initial_ellipse_xy	double	pixel**2	half-light ellipse of the initial fit
modelfit_CModel_initial_objective	double		-ln(likelihood*prior) at best-fit point for the initial fit
modelfit_CModel_initial_nonlinear_0	double		nonlinear parameters for the initial fit
modelfit_CModel_initial_nonlinear_1	double		nonlinear parameters for the initial fit
modelfit_CModel_initial_nonlinear_2	double		nonlinear parameters for the initial fit
modelfit_CModel_initial_fixed_0	double		fixed parameters for the initial fit
modelfit_CModel_initial_fixed_1	double		fixed parameters for the initial fit
modelfit_CModel_initial_nIter	int		Number of total iterations in stage
modelfit_CModel_initial_time	double	s	Time spent in stage
modelfit_CModel_exp_instFlux	double	count	flux from the exponential fit
modelfit_CModel_exp_instFluxErr	double	count	flux uncertainty from the exponential fit
modelfit_CModel_exp_flux_inner	double	count	flux from the exponential fit region, with no extrapolation
modelfit_CModel_exp_ellipse_xx	double	pixel**2	half-light ellipse of the exponential fit
modelfit_CModel_exp_ellipse_yy	double	pixel**2	half-light ellipse of the exponential fit
modelfit_CModel_exp_ellipse_xy	double	pixel**2	half-light ellipse of the exponential fit
modelfit_CModel_exp_objective	double		-ln(likelihood*prior) at best-fit point for the exponential fit
modelfit_CModel_exp_nonlinear_0	double		nonlinear parameters for the exponential fit
modelfit_CModel_exp_nonlinear_1	double		nonlinear parameters for the exponential fit
modelfit_CModel_exp_nonlinear_2	double		nonlinear parameters for the exponential fit
modelfit_CModel_exp_fixed_0	double		fixed parameters for the exponential fit
modelfit_CModel_exp_fixed_1	double		fixed parameters for the exponential fit
modelfit_CModel_exp_nIter	int		Number of total iterations in stage
modelfit_CModel_exp_time	double	s	Time spent in stage
modelfit_CModel_dev_instFlux	double	count	flux from the de Vaucouleur fit
modelfit_CModel_dev_instFluxErr	double	count	flux uncertainty from the de Vaucouleur fit
modelfit_CModel_dev_flux_inner	double	count	flux from the de Vaucouleur fit region, with no extrapolation
modelfit_CModel_dev_ellipse_xx	double	pixel**2	half-light ellipse of the de Vaucouleur fit
modelfit_CModel_dev_ellipse_yy	double	pixel**2	half-light ellipse of the de Vaucouleur fit
modelfit_CModel_dev_ellipse_xy	double	pixel**2	half-light ellipse of the de Vaucouleur fit
modelfit_CModel_dev_objective	double		-ln(likelihood*prior) at best-fit point for the de Vaucouleur fit
modelfit_CModel_dev_nonlinear_0	double		nonlinear parameters for the de Vaucouleur fit
modelfit_CModel_dev_nonlinear_1	double		nonlinear parameters for the de Vaucouleur fit
modelfit_CModel_dev_nonlinear_2	double		nonlinear parameters for the de Vaucouleur fit
modelfit_CModel_dev_fixed_0	double		fixed parameters for the de Vaucouleur fit
modelfit_CModel_dev_fixed_1	double		fixed parameters for the de Vaucouleur fit
modelfit_CModel_dev_nIter	int		Number of total iterations in stage
modelfit_CModel_dev_time	double	s	Time spent in stage
modelfit_CModel_instFlux	double	count	flux from the final cmodel fit
modelfit_CModel_instFluxErr	double	count	flux uncertainty from the final cmodel fit
modelfit_CModel_instFlux_inner	double	count	flux within the fit region, with no extrapolation
modelfit_CModel_fracDev	double		fraction of flux in de Vaucouleur component
modelfit_CModel_objective	double		-ln(likelihood) (chi^2) in cmodel fit
modelfit_CModel_ellipse_xx	double	pixel**2	fracDev-weighted average of exp.ellipse and dev.ellipse
modelfit_CModel_ellipse_yy	double	pixel**2	fracDev-weighted average of exp.ellipse and dev.ellipse
modelfit_CModel_ellipse_xy	double	pixel**2	fracDev-weighted average of exp.ellipse and dev.ellipse
modelfit_CModel_region_initial_ellipse_xx	double	pixel**2	ellipse used to set the pixel region for the initial fit (before applying bad pixel mask)
modelfit_CModel_region_initial_ellipse_yy	double	pixel**2	ellipse used to set the pixel region for the initial fit (before applying bad pixel mask)
modelfit_CModel_region_initial_ellipse_xy	double	pixel**2	ellipse used to set the pixel region for the initial fit (before applying bad pixel mask)
modelfit_CModel_region_final_ellipse_xx	double	pixel**2	ellipse used to set the pixel region for the final fit (before applying bad pixel mask)
modelfit_CModel_region_final_ellipse_yy	double	pixel**2	ellipse used to set the pixel region for the final fit (before applying bad pixel mask)
modelfit_CModel_region_final_ellipse_xy	double	pixel**2	ellipse used to set the pixel region for the final fit (before applying bad pixel mask)
modelfit_CModel_exp_apCorr	double		aperture correction applied to modelfit_CModel_exp
modelfit_CModel_exp_apCorrErr	double		standard deviation of aperture correction applied to modelfit_CModel_exp
modelfit_CModel_initial_apCorr	double		aperture correction applied to modelfit_CModel_initial
modelfit_CModel_initial_apCorrErr	double		standard deviation of aperture correction applied to modelfit_CModel_initial
modelfit_CModel_dev_apCorr	double		aperture correction applied to modelfit_CModel_dev
modelfit_CModel_dev_apCorrErr	double		standard deviation of aperture correction applied to modelfit_CModel_dev
modelfit_CModel_apCorr	double		aperture correction applied to modelfit_CModel
modelfit_CModel_apCorrErr	double		standard deviation of aperture correction applied to modelfit_CModel
modelfit_CModel_initial_flag	boolean		flag set when the flux for the initial flux failed
modelfit_CModel_initial_flag_trSmall	boolean		the optimizer converged because the trust radius became too small; this is a less-secure result than when the gradient is below the threshold, but usually not a problem
modelfit_CModel_initial_flag_maxIter	boolean		the optimizer hit the maximum number of iterations and did not converge
modelfit_CModel_initial_flag_numericError	boolean		numerical underflow or overflow in model evaluation; usually this means the prior was insufficient to regularize the fit, or all pixel values were zero.
modelfit_CModel_exp_flag	boolean		flag set when the flux for the exponential flux failed
modelfit_CModel_exp_flag_trSmall	boolean		the optimizer converged because the trust radius became too small; this is a less-secure result than when the gradient is below the threshold, but usually not a problem
modelfit_CModel_exp_flag_maxIter	boolean		the optimizer hit the maximum number of iterations and did not converge
modelfit_CModel_exp_flag_numericError	boolean		numerical underflow or overflow in model evaluation; usually this means the prior was insufficient to regularize the fit, or all pixel values were zero.
modelfit_CModel_dev_flag	boolean		flag set when the flux for the de Vaucouleur flux failed
modelfit_CModel_dev_flag_trSmall	boolean		the optimizer converged because the trust radius became too small; this is a less-secure result than when the gradient is below the threshold, but usually not a problem
modelfit_CModel_dev_flag_maxIter	boolean		the optimizer hit the maximum number of iterations and did not converge
modelfit_CModel_dev_flag_numericError	boolean		numerical underflow or overflow in model evaluation; usually this means the prior was insufficient to regularize the fit, or all pixel values were zero.
modelfit_CModel_flag	boolean		flag set if the final cmodel fit (or any previous fit) failed
modelfit_CModel_flag_region_maxArea	boolean		number of pixels in fit region exceeded the region.maxArea value
modelfit_CModel_flag_region_maxBadPixelFraction	boolean		the fraction of bad/clipped pixels in the fit region exceeded region.maxBadPixelFraction
modelfit_CModel_flags_region_usedFootprintArea	boolean		the pixel region for the initial fit was defined by the area of the Footprint
modelfit_CModel_flags_region_usedPsfArea	boolean		the pixel region for the initial fit was set to a fixed factor of the PSF area
modelfit_CModel_flags_region_usedInitialEllipseMin	boolean		the pixel region for the final fit was set to the lower bound defined by the initial fit
modelfit_CModel_flags_region_usedInitialEllipseMax	boolean		the pixel region for the final fit was set to the upper bound defined by the initial fit
modelfit_CModel_flag_noShape	boolean		the shape slot needed to initialize the parameters failed or was not defined
modelfit_CModel_flags_smallShape	boolean		initial parameter guess resulted in negative radius; used minimum of 0.100000 pixels instead.
modelfit_CModel_flag_noShapeletPsf	boolean		the multishapelet fit to the PSF model did not succeed
modelfit_CModel_flag_badCentroid	boolean		input centroid was not within the fit region (probably because it''s not within the Footprint)
modelfit_CModel_exp_flag_apCorr	boolean		set if unable to aperture correct modelfit_CModel_exp
modelfit_CModel_initial_flag_apCorr	boolean		set if unable to aperture correct modelfit_CModel_initial
modelfit_CModel_dev_flag_apCorr	boolean		set if unable to aperture correct modelfit_CModel_dev
modelfit_CModel_flag_apCorr	boolean		set if unable to aperture correct modelfit_CModel

forced_photometry

Forced photometry measurements for objects detected in the coadded images, at the locations defined by the position table. (747 columns)

Column Name	Data Type	Unit	Description [UCD]
objectId	long		Unique id.
coord_ra	double		position in ra/dec [pos.eq.ra]
coord_dec	double		position in ra/dec [pos.eq.dec]
g_base_PixelFlags_flag	boolean		General failure flag, set if anything went wrong
g_base_PixelFlags_flag_offimage	boolean		Source center is off image
g_base_PixelFlags_flag_edge	boolean		Source is outside usable exposure region (masked EDGE or NO_DATA)
g_base_PixelFlags_flag_interpolated	boolean		Interpolated pixel in the Source footprint
g_base_PixelFlags_flag_saturated	boolean		Saturated pixel in the Source footprint
g_base_PixelFlags_flag_cr	boolean		Cosmic ray in the Source footprint
g_base_PixelFlags_flag_bad	boolean		Bad pixel in the Source footprint
g_base_PixelFlags_flag_suspect	boolean		Source's footprint includes suspect pixels
g_base_PixelFlags_flag_interpolatedCenter	boolean		Interpolated pixel in the Source center
g_base_PixelFlags_flag_saturatedCenter	boolean		Saturated pixel in the Source center
g_base_PixelFlags_flag_crCenter	boolean		Cosmic ray in the Source center
g_base_PixelFlags_flag_suspectCenter	boolean		Source's center is close to suspect pixels
g_base_PixelFlags_flag_clippedCenter	boolean		Source center is close to CLIPPED pixels
g_base_PixelFlags_flag_sensor_edgeCenter	boolean		Source center is close to SENSOR_EDGE pixels
g_base_PixelFlags_flag_rejectedCenter	boolean		Source center is close to REJECTED pixels
g_base_PixelFlags_flag_inexact_psfCenter	boolean		Source center is close to INEXACT_PSF pixels
g_base_PixelFlags_flag_bright_objectCenter	boolean		Source center is close to BRIGHT_OBJECT pixels
g_base_PixelFlags_flag_clipped	boolean		Source footprint includes CLIPPED pixels
g_base_PixelFlags_flag_sensor_edge	boolean		Source footprint includes SENSOR_EDGE pixels
g_base_PixelFlags_flag_rejected	boolean		Source footprint includes REJECTED pixels
g_base_PixelFlags_flag_inexact_psf	boolean		Source footprint includes INEXACT_PSF pixels
g_base_PixelFlags_flag_bright_object	boolean		Source footprint includes BRIGHT_OBJECT pixels
g_good	boolean		True if the source has no flagged pixels.
g_base_ClassificationExtendedness_value	double		Set to 1 for extended sources, 0 for point sources.
g_base_ClassificationExtendedness_flag	boolean		Set to 1 for any fatal failure.
g_modelfit_CModel_instFlux	double	count	flux from the final cmodel fit
g_modelfit_CModel_instFluxErr	double	count	flux uncertainty from the final cmodel fit
g_modelfit_CModel_instFlux_inner	double	count	flux within the fit region, with no extrapolation
g_modelfit_CModel_fracDev	double		fraction of flux in de Vaucouleur component
g_modelfit_CModel_objective	double		-ln(likelihood) (chi^2) in cmodel fit
g_modelfit_CModel_apCorr	double		aperture correction applied to modelfit_CModel
g_modelfit_CModel_apCorrErr	double		standard deviation of aperture correction applied to modelfit_CModel
g_modelfit_CModel_flag	boolean		flag set if the final cmodel fit (or any previous fit) failed
g_modelfit_CModel_flag_region_maxArea	boolean		number of pixels in fit region exceeded the region.maxArea value
g_modelfit_CModel_flag_region_maxBadPixelFraction	boolean		the fraction of bad/clipped pixels in the fit region exceeded region.maxBadPixelFraction
g_modelfit_CModel_flag_badReference	boolean		The original fit in the reference catalog failed.
g_modelfit_CModel_flag_noShapeletPsf	boolean		the multishapelet fit to the PSF model did not succeed
g_modelfit_CModel_flag_badCentroid	boolean		input centroid was not within the fit region (probably because it''s not within the Footprint)
g_modelfit_CModel_flag_apCorr	boolean		set if unable to aperture correct modelfit_CModel
g_base_SdssCentroid_x	double	pixel	centroid from Sdss Centroid algorithm
g_base_SdssCentroid_y	double	pixel	centroid from Sdss Centroid algorithm
g_base_SdssCentroid_xErr	double	pixel	1-sigma uncertainty on x position
g_base_SdssCentroid_yErr	double	pixel	1-sigma uncertainty on y position
g_base_SdssCentroid_flag	boolean		General Failure Flag
g_base_SdssCentroid_flag_edge	boolean		Object too close to edge
g_base_SdssCentroid_flag_noSecondDerivative	boolean		Vanishing second derivative
g_base_SdssCentroid_flag_almostNoSecondDerivative	boolean		Almost vanishing second derivative
g_base_SdssCentroid_flag_notAtMaximum	boolean		Object is not at a maximum
g_base_SdssCentroid_flag_resetToPeak	boolean		set if CentroidChecker reset the centroid
g_base_SdssCentroid_flag_badInitialCentroid	boolean		whether the reference centroid is marked as bad
g_base_SdssShape_xx	double	pixel**2	elliptical Gaussian adaptive moments
g_base_SdssShape_yy	double	pixel**2	elliptical Gaussian adaptive moments
g_base_SdssShape_xy	double	pixel**2	elliptical Gaussian adaptive moments
g_base_SdssShape_xxErr	double	pixel**2	Standard deviation of xx moment
g_base_SdssShape_yyErr	double	pixel**2	Standard deviation of yy moment
g_base_SdssShape_xyErr	double	pixel**2	Standard deviation of xy moment
g_base_SdssShape_x	double	pixel	elliptical Gaussian adaptive moments
g_base_SdssShape_y	double	pixel	elliptical Gaussian adaptive moments
g_base_SdssShape_instFlux	double	count	elliptical Gaussian adaptive moments
g_base_SdssShape_instFluxErr	double	count	1-sigma instFlux uncertainty
g_base_SdssShape_psf_xx	double	pixel**2	adaptive moments of the PSF model at the object position
g_base_SdssShape_psf_yy	double	pixel**2	adaptive moments of the PSF model at the object position
g_base_SdssShape_psf_xy	double	pixel**2	adaptive moments of the PSF model at the object position
g_base_SdssShape_instFlux_xx_Cov	double	count.pixel**2	uncertainty covariance between base_SdssShape_instFlux and base_SdssShape_xx
g_base_SdssShape_instFlux_yy_Cov	double	count.pixel**2	uncertainty covariance between base_SdssShape_instFlux and base_SdssShape_yy
g_base_SdssShape_instFlux_xy_Cov	double	count.pixel**2	uncertainty covariance between base_SdssShape_instFlux and base_SdssShape_xy
g_base_SdssShape_flag	boolean		General Failure Flag
g_base_SdssShape_flag_unweightedBad	boolean		Both weighted and unweighted moments were invalid
g_base_SdssShape_flag_unweighted	boolean		Weighted moments converged to an invalid value; using unweighted moments
g_base_SdssShape_flag_shift	boolean		centroid shifted by more than the maximum allowed amount
g_base_SdssShape_flag_maxIter	boolean		Too many iterations in adaptive moments
g_base_SdssShape_flag_psf	boolean		Failure in measuring PSF model shape
g_base_SdssShape_flag_badCentroid	boolean		General Failure Flag
g_base_PsfFlux_instFlux	double	count	instFlux derived from linear least-squares fit of PSF model
g_base_PsfFlux_instFluxErr	double	count	1-sigma instFlux uncertainty
g_base_PsfFlux_area	double	pixel	effective area of PSF
g_base_PsfFlux_apCorr	double		aperture correction applied to base_PsfFlux
g_base_PsfFlux_apCorrErr	double		standard deviation of aperture correction applied to base_PsfFlux
g_base_PsfFlux_flag	boolean		General Failure Flag
g_base_PsfFlux_flag_noGoodPixels	boolean		not enough non-rejected pixels in data to attempt the fit
g_base_PsfFlux_flag_edge	boolean		object was too close to the edge of the image to use the full PSF model
g_base_PsfFlux_flag_apCorr	boolean		set if unable to aperture correct base_PsfFlux
g_base_PsfFlux_flag_badCentroid	boolean		General Failure Flag
g_base_InputCount_value	int		Number of images contributing at center, not including anyclipping
g_base_InputCount_flag	boolean		Set for any fatal failure
g_base_InputCount_flag_noInputs	boolean		No coadd inputs available
g_base_InputCount_flag_badCentroid	boolean		General Failure Flag
g_base_Variance_value	double		Variance at object position
g_base_Variance_flag	boolean		Set for any fatal failure
g_base_Variance_flag_emptyFootprint	boolean		Set to True when the footprint has no usable pixels
g_base_Variance_flag_badCentroid	boolean		General Failure Flag
g_base_LocalBackground_instFlux	double	count	background in annulus around source
g_base_LocalBackground_instFluxErr	double	count	1-sigma instFlux uncertainty
g_base_LocalBackground_flag	boolean		General Failure Flag
g_base_LocalBackground_flag_noGoodPixels	boolean		no good pixels in the annulus
g_base_LocalBackground_flag_noPsf	boolean		no PSF provided
g_base_LocalBackground_flag_badCentroid	boolean		General Failure Flag
g_modelfit_CModel_initial_instFlux	double	count	flux from the initial fit
g_modelfit_CModel_initial_instFluxErr	double	count	flux uncertainty from the initial fit
g_modelfit_CModel_initial_flux_inner	double	count	flux from the initial fit region, with no extrapolation
g_modelfit_CModel_exp_instFlux	double	count	flux from the exponential fit
g_modelfit_CModel_exp_instFluxErr	double	count	flux uncertainty from the exponential fit
g_modelfit_CModel_exp_flux_inner	double	count	flux from the exponential fit region, with no extrapolation
g_modelfit_CModel_dev_instFlux	double	count	flux from the de Vaucouleur fit
g_modelfit_CModel_dev_instFluxErr	double	count	flux uncertainty from the de Vaucouleur fit
g_modelfit_CModel_dev_flux_inner	double	count	flux from the de Vaucouleur fit region, with no extrapolation
g_modelfit_CModel_exp_apCorr	double		aperture correction applied to modelfit_CModel_exp
g_modelfit_CModel_exp_apCorrErr	double		standard deviation of aperture correction applied to modelfit_CModel_exp
g_modelfit_CModel_dev_apCorr	double		aperture correction applied to modelfit_CModel_dev
g_modelfit_CModel_dev_apCorrErr	double		standard deviation of aperture correction applied to modelfit_CModel_dev
g_modelfit_CModel_initial_apCorr	double		aperture correction applied to modelfit_CModel_initial
g_modelfit_CModel_initial_apCorrErr	double		standard deviation of aperture correction applied to modelfit_CModel_initial
g_modelfit_CModel_initial_flag	boolean		flag set when the flux for the initial flux failed
g_modelfit_CModel_initial_flag_badReference	boolean		The original fit in the reference catalog failed.
g_modelfit_CModel_initial_flag_numericError	boolean		numerical underflow or overflow in model evaluation; usually this means the prior was insufficient to regularize the fit, or all pixel values were zero.
g_modelfit_CModel_exp_flag	boolean		flag set when the flux for the exponential flux failed
g_modelfit_CModel_exp_flag_badReference	boolean		The original fit in the reference catalog failed.
g_modelfit_CModel_exp_flag_numericError	boolean		numerical underflow or overflow in model evaluation; usually this means the prior was insufficient to regularize the fit, or all pixel values were zero.
g_modelfit_CModel_dev_flag	boolean		flag set when the flux for the de Vaucouleur flux failed
g_modelfit_CModel_dev_flag_badReference	boolean		The original fit in the reference catalog failed.
g_modelfit_CModel_dev_flag_numericError	boolean		numerical underflow or overflow in model evaluation; usually this means the prior was insufficient to regularize the fit, or all pixel values were zero.
g_modelfit_CModel_exp_flag_apCorr	boolean		set if unable to aperture correct modelfit_CModel_exp
g_modelfit_CModel_dev_flag_apCorr	boolean		set if unable to aperture correct modelfit_CModel_dev
g_modelfit_CModel_initial_flag_apCorr	boolean		set if unable to aperture correct modelfit_CModel_initial
i_base_PixelFlags_flag	boolean		General failure flag, set if anything went wrong
i_base_PixelFlags_flag_offimage	boolean		Source center is off image
i_base_PixelFlags_flag_edge	boolean		Source is outside usable exposure region (masked EDGE or NO_DATA)
i_base_PixelFlags_flag_interpolated	boolean		Interpolated pixel in the Source footprint
i_base_PixelFlags_flag_saturated	boolean		Saturated pixel in the Source footprint
i_base_PixelFlags_flag_cr	boolean		Cosmic ray in the Source footprint
i_base_PixelFlags_flag_bad	boolean		Bad pixel in the Source footprint
i_base_PixelFlags_flag_suspect	boolean		Source's footprint includes suspect pixels
i_base_PixelFlags_flag_interpolatedCenter	boolean		Interpolated pixel in the Source center
i_base_PixelFlags_flag_saturatedCenter	boolean		Saturated pixel in the Source center
i_base_PixelFlags_flag_crCenter	boolean		Cosmic ray in the Source center
i_base_PixelFlags_flag_suspectCenter	boolean		Source's center is close to suspect pixels
i_base_PixelFlags_flag_clippedCenter	boolean		Source center is close to CLIPPED pixels
i_base_PixelFlags_flag_sensor_edgeCenter	boolean		Source center is close to SENSOR_EDGE pixels
i_base_PixelFlags_flag_rejectedCenter	boolean		Source center is close to REJECTED pixels
i_base_PixelFlags_flag_inexact_psfCenter	boolean		Source center is close to INEXACT_PSF pixels
i_base_PixelFlags_flag_bright_objectCenter	boolean		Source center is close to BRIGHT_OBJECT pixels
i_base_PixelFlags_flag_clipped	boolean		Source footprint includes CLIPPED pixels
i_base_PixelFlags_flag_sensor_edge	boolean		Source footprint includes SENSOR_EDGE pixels
i_base_PixelFlags_flag_rejected	boolean		Source footprint includes REJECTED pixels
i_base_PixelFlags_flag_inexact_psf	boolean		Source footprint includes INEXACT_PSF pixels
i_base_PixelFlags_flag_bright_object	boolean		Source footprint includes BRIGHT_OBJECT pixels
i_good	boolean		True if the source has no flagged pixels.
i_base_ClassificationExtendedness_value	double		Set to 1 for extended sources, 0 for point sources.
i_base_ClassificationExtendedness_flag	boolean		Set to 1 for any fatal failure.
i_modelfit_CModel_instFlux	double	count	flux from the final cmodel fit
i_modelfit_CModel_instFluxErr	double	count	flux uncertainty from the final cmodel fit
i_modelfit_CModel_instFlux_inner	double	count	flux within the fit region, with no extrapolation
i_modelfit_CModel_fracDev	double		fraction of flux in de Vaucouleur component
i_modelfit_CModel_objective	double		-ln(likelihood) (chi^2) in cmodel fit
i_modelfit_CModel_apCorr	double		aperture correction applied to modelfit_CModel
i_modelfit_CModel_apCorrErr	double		standard deviation of aperture correction applied to modelfit_CModel
i_modelfit_CModel_flag	boolean		flag set if the final cmodel fit (or any previous fit) failed
i_modelfit_CModel_flag_region_maxArea	boolean		number of pixels in fit region exceeded the region.maxArea value
i_modelfit_CModel_flag_region_maxBadPixelFraction	boolean		the fraction of bad/clipped pixels in the fit region exceeded region.maxBadPixelFraction
i_modelfit_CModel_flag_badReference	boolean		The original fit in the reference catalog failed.
i_modelfit_CModel_flag_noShapeletPsf	boolean		the multishapelet fit to the PSF model did not succeed
i_modelfit_CModel_flag_badCentroid	boolean		input centroid was not within the fit region (probably because it''s not within the Footprint)
i_modelfit_CModel_flag_apCorr	boolean		set if unable to aperture correct modelfit_CModel
i_base_SdssCentroid_x	double	pixel	centroid from Sdss Centroid algorithm
i_base_SdssCentroid_y	double	pixel	centroid from Sdss Centroid algorithm
i_base_SdssCentroid_xErr	double	pixel	1-sigma uncertainty on x position
i_base_SdssCentroid_yErr	double	pixel	1-sigma uncertainty on y position
i_base_SdssCentroid_flag	boolean		General Failure Flag
i_base_SdssCentroid_flag_edge	boolean		Object too close to edge
i_base_SdssCentroid_flag_noSecondDerivative	boolean		Vanishing second derivative
i_base_SdssCentroid_flag_almostNoSecondDerivative	boolean		Almost vanishing second derivative
i_base_SdssCentroid_flag_notAtMaximum	boolean		Object is not at a maximum
i_base_SdssCentroid_flag_resetToPeak	boolean		set if CentroidChecker reset the centroid
i_base_SdssCentroid_flag_badInitialCentroid	boolean		whether the reference centroid is marked as bad
i_base_SdssShape_xx	double	pixel**2	elliptical Gaussian adaptive moments
i_base_SdssShape_yy	double	pixel**2	elliptical Gaussian adaptive moments
i_base_SdssShape_xy	double	pixel**2	elliptical Gaussian adaptive moments
i_base_SdssShape_xxErr	double	pixel**2	Standard deviation of xx moment
i_base_SdssShape_yyErr	double	pixel**2	Standard deviation of yy moment
i_base_SdssShape_xyErr	double	pixel**2	Standard deviation of xy moment
i_base_SdssShape_x	double	pixel	elliptical Gaussian adaptive moments
i_base_SdssShape_y	double	pixel	elliptical Gaussian adaptive moments
i_base_SdssShape_instFlux	double	count	elliptical Gaussian adaptive moments
i_base_SdssShape_instFluxErr	double	count	1-sigma instFlux uncertainty
i_base_SdssShape_psf_xx	double	pixel**2	adaptive moments of the PSF model at the object position
i_base_SdssShape_psf_yy	double	pixel**2	adaptive moments of the PSF model at the object position
i_base_SdssShape_psf_xy	double	pixel**2	adaptive moments of the PSF model at the object position
i_base_SdssShape_instFlux_xx_Cov	double	count.pixel**2	uncertainty covariance between base_SdssShape_instFlux and base_SdssShape_xx
i_base_SdssShape_instFlux_yy_Cov	double	count.pixel**2	uncertainty covariance between base_SdssShape_instFlux and base_SdssShape_yy
i_base_SdssShape_instFlux_xy_Cov	double	count.pixel**2	uncertainty covariance between base_SdssShape_instFlux and base_SdssShape_xy
i_base_SdssShape_flag	boolean		General Failure Flag
i_base_SdssShape_flag_unweightedBad	boolean		Both weighted and unweighted moments were invalid
i_base_SdssShape_flag_unweighted	boolean		Weighted moments converged to an invalid value; using unweighted moments
i_base_SdssShape_flag_shift	boolean		centroid shifted by more than the maximum allowed amount
i_base_SdssShape_flag_maxIter	boolean		Too many iterations in adaptive moments
i_base_SdssShape_flag_psf	boolean		Failure in measuring PSF model shape
i_base_SdssShape_flag_badCentroid	boolean		General Failure Flag
i_base_PsfFlux_instFlux	double	count	instFlux derived from linear least-squares fit of PSF model
i_base_PsfFlux_instFluxErr	double	count	1-sigma instFlux uncertainty
i_base_PsfFlux_area	double	pixel	effective area of PSF
i_base_PsfFlux_apCorr	double		aperture correction applied to base_PsfFlux
i_base_PsfFlux_apCorrErr	double		standard deviation of aperture correction applied to base_PsfFlux
i_base_PsfFlux_flag	boolean		General Failure Flag
i_base_PsfFlux_flag_noGoodPixels	boolean		not enough non-rejected pixels in data to attempt the fit
i_base_PsfFlux_flag_edge	boolean		object was too close to the edge of the image to use the full PSF model
i_base_PsfFlux_flag_apCorr	boolean		set if unable to aperture correct base_PsfFlux
i_base_PsfFlux_flag_badCentroid	boolean		General Failure Flag
i_base_InputCount_value	int		Number of images contributing at center, not including anyclipping
i_base_InputCount_flag	boolean		Set for any fatal failure
i_base_InputCount_flag_noInputs	boolean		No coadd inputs available
i_base_InputCount_flag_badCentroid	boolean		General Failure Flag
i_base_Variance_value	double		Variance at object position
i_base_Variance_flag	boolean		Set for any fatal failure
i_base_Variance_flag_emptyFootprint	boolean		Set to True when the footprint has no usable pixels
i_base_Variance_flag_badCentroid	boolean		General Failure Flag
i_base_LocalBackground_instFlux	double	count	background in annulus around source
i_base_LocalBackground_instFluxErr	double	count	1-sigma instFlux uncertainty
i_base_LocalBackground_flag	boolean		General Failure Flag
i_base_LocalBackground_flag_noGoodPixels	boolean		no good pixels in the annulus
i_base_LocalBackground_flag_noPsf	boolean		no PSF provided
i_base_LocalBackground_flag_badCentroid	boolean		General Failure Flag
i_modelfit_CModel_initial_instFlux	double	count	flux from the initial fit
i_modelfit_CModel_initial_instFluxErr	double	count	flux uncertainty from the initial fit
i_modelfit_CModel_initial_flux_inner	double	count	flux from the initial fit region, with no extrapolation
i_modelfit_CModel_exp_instFlux	double	count	flux from the exponential fit
i_modelfit_CModel_exp_instFluxErr	double	count	flux uncertainty from the exponential fit
i_modelfit_CModel_exp_flux_inner	double	count	flux from the exponential fit region, with no extrapolation
i_modelfit_CModel_dev_instFlux	double	count	flux from the de Vaucouleur fit
i_modelfit_CModel_dev_instFluxErr	double	count	flux uncertainty from the de Vaucouleur fit
i_modelfit_CModel_dev_flux_inner	double	count	flux from the de Vaucouleur fit region, with no extrapolation
i_modelfit_CModel_exp_apCorr	double		aperture correction applied to modelfit_CModel_exp
i_modelfit_CModel_exp_apCorrErr	double		standard deviation of aperture correction applied to modelfit_CModel_exp
i_modelfit_CModel_dev_apCorr	double		aperture correction applied to modelfit_CModel_dev
i_modelfit_CModel_dev_apCorrErr	double		standard deviation of aperture correction applied to modelfit_CModel_dev
i_modelfit_CModel_initial_apCorr	double		aperture correction applied to modelfit_CModel_initial
i_modelfit_CModel_initial_apCorrErr	double		standard deviation of aperture correction applied to modelfit_CModel_initial
i_modelfit_CModel_initial_flag	boolean		flag set when the flux for the initial flux failed
i_modelfit_CModel_initial_flag_badReference	boolean		The original fit in the reference catalog failed.
i_modelfit_CModel_initial_flag_numericError	boolean		numerical underflow or overflow in model evaluation; usually this means the prior was insufficient to regularize the fit, or all pixel values were zero.
i_modelfit_CModel_exp_flag	boolean		flag set when the flux for the exponential flux failed
i_modelfit_CModel_exp_flag_badReference	boolean		The original fit in the reference catalog failed.
i_modelfit_CModel_exp_flag_numericError	boolean		numerical underflow or overflow in model evaluation; usually this means the prior was insufficient to regularize the fit, or all pixel values were zero.
i_modelfit_CModel_dev_flag	boolean		flag set when the flux for the de Vaucouleur flux failed
i_modelfit_CModel_dev_flag_badReference	boolean		The original fit in the reference catalog failed.
i_modelfit_CModel_dev_flag_numericError	boolean		numerical underflow or overflow in model evaluation; usually this means the prior was insufficient to regularize the fit, or all pixel values were zero.
i_modelfit_CModel_exp_flag_apCorr	boolean		set if unable to aperture correct modelfit_CModel_exp
i_modelfit_CModel_dev_flag_apCorr	boolean		set if unable to aperture correct modelfit_CModel_dev
i_modelfit_CModel_initial_flag_apCorr	boolean		set if unable to aperture correct modelfit_CModel_initial
r_base_PixelFlags_flag	boolean		General failure flag, set if anything went wrong
r_base_PixelFlags_flag_offimage	boolean		Source center is off image
r_base_PixelFlags_flag_edge	boolean		Source is outside usable exposure region (masked EDGE or NO_DATA)
r_base_PixelFlags_flag_interpolated	boolean		Interpolated pixel in the Source footprint
r_base_PixelFlags_flag_saturated	boolean		Saturated pixel in the Source footprint
r_base_PixelFlags_flag_cr	boolean		Cosmic ray in the Source footprint
r_base_PixelFlags_flag_bad	boolean		Bad pixel in the Source footprint
r_base_PixelFlags_flag_suspect	boolean		Source's footprint includes suspect pixels
r_base_PixelFlags_flag_interpolatedCenter	boolean		Interpolated pixel in the Source center
r_base_PixelFlags_flag_saturatedCenter	boolean		Saturated pixel in the Source center
r_base_PixelFlags_flag_crCenter	boolean		Cosmic ray in the Source center
r_base_PixelFlags_flag_suspectCenter	boolean		Source's center is close to suspect pixels
r_base_PixelFlags_flag_clippedCenter	boolean		Source center is close to CLIPPED pixels
r_base_PixelFlags_flag_sensor_edgeCenter	boolean		Source center is close to SENSOR_EDGE pixels
r_base_PixelFlags_flag_rejectedCenter	boolean		Source center is close to REJECTED pixels
r_base_PixelFlags_flag_inexact_psfCenter	boolean		Source center is close to INEXACT_PSF pixels
r_base_PixelFlags_flag_bright_objectCenter	boolean		Source center is close to BRIGHT_OBJECT pixels
r_base_PixelFlags_flag_clipped	boolean		Source footprint includes CLIPPED pixels
r_base_PixelFlags_flag_sensor_edge	boolean		Source footprint includes SENSOR_EDGE pixels
r_base_PixelFlags_flag_rejected	boolean		Source footprint includes REJECTED pixels
r_base_PixelFlags_flag_inexact_psf	boolean		Source footprint includes INEXACT_PSF pixels
r_base_PixelFlags_flag_bright_object	boolean		Source footprint includes BRIGHT_OBJECT pixels
r_good	boolean		True if the source has no flagged pixels.
r_base_ClassificationExtendedness_value	double		Set to 1 for extended sources, 0 for point sources.
r_base_ClassificationExtendedness_flag	boolean		Set to 1 for any fatal failure.
r_modelfit_CModel_instFlux	double	count	flux from the final cmodel fit
r_modelfit_CModel_instFluxErr	double	count	flux uncertainty from the final cmodel fit
r_modelfit_CModel_instFlux_inner	double	count	flux within the fit region, with no extrapolation
r_modelfit_CModel_fracDev	double		fraction of flux in de Vaucouleur component
r_modelfit_CModel_objective	double		-ln(likelihood) (chi^2) in cmodel fit
r_modelfit_CModel_apCorr	double		aperture correction applied to modelfit_CModel
r_modelfit_CModel_apCorrErr	double		standard deviation of aperture correction applied to modelfit_CModel
r_modelfit_CModel_flag	boolean		flag set if the final cmodel fit (or any previous fit) failed
r_modelfit_CModel_flag_region_maxArea	boolean		number of pixels in fit region exceeded the region.maxArea value
r_modelfit_CModel_flag_region_maxBadPixelFraction	boolean		the fraction of bad/clipped pixels in the fit region exceeded region.maxBadPixelFraction
r_modelfit_CModel_flag_badReference	boolean		The original fit in the reference catalog failed.
r_modelfit_CModel_flag_noShapeletPsf	boolean		the multishapelet fit to the PSF model did not succeed
r_modelfit_CModel_flag_badCentroid	boolean		input centroid was not within the fit region (probably because it''s not within the Footprint)
r_modelfit_CModel_flag_apCorr	boolean		set if unable to aperture correct modelfit_CModel
r_base_SdssCentroid_x	double	pixel	centroid from Sdss Centroid algorithm
r_base_SdssCentroid_y	double	pixel	centroid from Sdss Centroid algorithm
r_base_SdssCentroid_xErr	double	pixel	1-sigma uncertainty on x position
r_base_SdssCentroid_yErr	double	pixel	1-sigma uncertainty on y position
r_base_SdssCentroid_flag	boolean		General Failure Flag
r_base_SdssCentroid_flag_edge	boolean		Object too close to edge
r_base_SdssCentroid_flag_noSecondDerivative	boolean		Vanishing second derivative
r_base_SdssCentroid_flag_almostNoSecondDerivative	boolean		Almost vanishing second derivative
r_base_SdssCentroid_flag_notAtMaximum	boolean		Object is not at a maximum
r_base_SdssCentroid_flag_resetToPeak	boolean		set if CentroidChecker reset the centroid
r_base_SdssCentroid_flag_badInitialCentroid	boolean		whether the reference centroid is marked as bad
r_base_SdssShape_xx	double	pixel**2	elliptical Gaussian adaptive moments
r_base_SdssShape_yy	double	pixel**2	elliptical Gaussian adaptive moments
r_base_SdssShape_xy	double	pixel**2	elliptical Gaussian adaptive moments
r_base_SdssShape_xxErr	double	pixel**2	Standard deviation of xx moment
r_base_SdssShape_yyErr	double	pixel**2	Standard deviation of yy moment
r_base_SdssShape_xyErr	double	pixel**2	Standard deviation of xy moment
r_base_SdssShape_x	double	pixel	elliptical Gaussian adaptive moments
r_base_SdssShape_y	double	pixel	elliptical Gaussian adaptive moments
r_base_SdssShape_instFlux	double	count	elliptical Gaussian adaptive moments
r_base_SdssShape_instFluxErr	double	count	1-sigma instFlux uncertainty
r_base_SdssShape_psf_xx	double	pixel**2	adaptive moments of the PSF model at the object position
r_base_SdssShape_psf_yy	double	pixel**2	adaptive moments of the PSF model at the object position
r_base_SdssShape_psf_xy	double	pixel**2	adaptive moments of the PSF model at the object position
r_base_SdssShape_instFlux_xx_Cov	double	count.pixel**2	uncertainty covariance between base_SdssShape_instFlux and base_SdssShape_xx
r_base_SdssShape_instFlux_yy_Cov	double	count.pixel**2	uncertainty covariance between base_SdssShape_instFlux and base_SdssShape_yy
r_base_SdssShape_instFlux_xy_Cov	double	count.pixel**2	uncertainty covariance between base_SdssShape_instFlux and base_SdssShape_xy
r_base_SdssShape_flag	boolean		General Failure Flag
r_base_SdssShape_flag_unweightedBad	boolean		Both weighted and unweighted moments were invalid
r_base_SdssShape_flag_unweighted	boolean		Weighted moments converged to an invalid value; using unweighted moments
r_base_SdssShape_flag_shift	boolean		centroid shifted by more than the maximum allowed amount
r_base_SdssShape_flag_maxIter	boolean		Too many iterations in adaptive moments
r_base_SdssShape_flag_psf	boolean		Failure in measuring PSF model shape
r_base_SdssShape_flag_badCentroid	boolean		General Failure Flag
r_base_PsfFlux_instFlux	double	count	instFlux derived from linear least-squares fit of PSF model
r_base_PsfFlux_instFluxErr	double	count	1-sigma instFlux uncertainty
r_base_PsfFlux_area	double	pixel	effective area of PSF
r_base_PsfFlux_apCorr	double		aperture correction applied to base_PsfFlux
r_base_PsfFlux_apCorrErr	double		standard deviation of aperture correction applied to base_PsfFlux
r_base_PsfFlux_flag	boolean		General Failure Flag
r_base_PsfFlux_flag_noGoodPixels	boolean		not enough non-rejected pixels in data to attempt the fit
r_base_PsfFlux_flag_edge	boolean		object was too close to the edge of the image to use the full PSF model
r_base_PsfFlux_flag_apCorr	boolean		set if unable to aperture correct base_PsfFlux
r_base_PsfFlux_flag_badCentroid	boolean		General Failure Flag
r_base_InputCount_value	int		Number of images contributing at center, not including anyclipping
r_base_InputCount_flag	boolean		Set for any fatal failure
r_base_InputCount_flag_noInputs	boolean		No coadd inputs available
r_base_InputCount_flag_badCentroid	boolean		General Failure Flag
r_base_Variance_value	double		Variance at object position
r_base_Variance_flag	boolean		Set for any fatal failure
r_base_Variance_flag_emptyFootprint	boolean		Set to True when the footprint has no usable pixels
r_base_Variance_flag_badCentroid	boolean		General Failure Flag
r_base_LocalBackground_instFlux	double	count	background in annulus around source
r_base_LocalBackground_instFluxErr	double	count	1-sigma instFlux uncertainty
r_base_LocalBackground_flag	boolean		General Failure Flag
r_base_LocalBackground_flag_noGoodPixels	boolean		no good pixels in the annulus
r_base_LocalBackground_flag_noPsf	boolean		no PSF provided
r_base_LocalBackground_flag_badCentroid	boolean		General Failure Flag
r_modelfit_CModel_initial_instFlux	double	count	flux from the initial fit
r_modelfit_CModel_initial_instFluxErr	double	count	flux uncertainty from the initial fit
r_modelfit_CModel_initial_flux_inner	double	count	flux from the initial fit region, with no extrapolation
r_modelfit_CModel_exp_instFlux	double	count	flux from the exponential fit
r_modelfit_CModel_exp_instFluxErr	double	count	flux uncertainty from the exponential fit
r_modelfit_CModel_exp_flux_inner	double	count	flux from the exponential fit region, with no extrapolation
r_modelfit_CModel_dev_instFlux	double	count	flux from the de Vaucouleur fit
r_modelfit_CModel_dev_instFluxErr	double	count	flux uncertainty from the de Vaucouleur fit
r_modelfit_CModel_dev_flux_inner	double	count	flux from the de Vaucouleur fit region, with no extrapolation
r_modelfit_CModel_exp_apCorr	double		aperture correction applied to modelfit_CModel_exp
r_modelfit_CModel_exp_apCorrErr	double		standard deviation of aperture correction applied to modelfit_CModel_exp
r_modelfit_CModel_dev_apCorr	double		aperture correction applied to modelfit_CModel_dev
r_modelfit_CModel_dev_apCorrErr	double		standard deviation of aperture correction applied to modelfit_CModel_dev
r_modelfit_CModel_initial_apCorr	double		aperture correction applied to modelfit_CModel_initial
r_modelfit_CModel_initial_apCorrErr	double		standard deviation of aperture correction applied to modelfit_CModel_initial
r_modelfit_CModel_initial_flag	boolean		flag set when the flux for the initial flux failed
r_modelfit_CModel_initial_flag_badReference	boolean		The original fit in the reference catalog failed.
r_modelfit_CModel_initial_flag_numericError	boolean		numerical underflow or overflow in model evaluation; usually this means the prior was insufficient to regularize the fit, or all pixel values were zero.
r_modelfit_CModel_exp_flag	boolean		flag set when the flux for the exponential flux failed
r_modelfit_CModel_exp_flag_badReference	boolean		The original fit in the reference catalog failed.
r_modelfit_CModel_exp_flag_numericError	boolean		numerical underflow or overflow in model evaluation; usually this means the prior was insufficient to regularize the fit, or all pixel values were zero.
r_modelfit_CModel_dev_flag	boolean		flag set when the flux for the de Vaucouleur flux failed
r_modelfit_CModel_dev_flag_badReference	boolean		The original fit in the reference catalog failed.
r_modelfit_CModel_dev_flag_numericError	boolean		numerical underflow or overflow in model evaluation; usually this means the prior was insufficient to regularize the fit, or all pixel values were zero.
r_modelfit_CModel_exp_flag_apCorr	boolean		set if unable to aperture correct modelfit_CModel_exp
r_modelfit_CModel_dev_flag_apCorr	boolean		set if unable to aperture correct modelfit_CModel_dev
r_modelfit_CModel_initial_flag_apCorr	boolean		set if unable to aperture correct modelfit_CModel_initial
u_base_PixelFlags_flag	boolean		General failure flag, set if anything went wrong
u_base_PixelFlags_flag_offimage	boolean		Source center is off image
u_base_PixelFlags_flag_edge	boolean		Source is outside usable exposure region (masked EDGE or NO_DATA)
u_base_PixelFlags_flag_interpolated	boolean		Interpolated pixel in the Source footprint
u_base_PixelFlags_flag_saturated	boolean		Saturated pixel in the Source footprint
u_base_PixelFlags_flag_cr	boolean		Cosmic ray in the Source footprint
u_base_PixelFlags_flag_bad	boolean		Bad pixel in the Source footprint
u_base_PixelFlags_flag_suspect	boolean		Source's footprint includes suspect pixels
u_base_PixelFlags_flag_interpolatedCenter	boolean		Interpolated pixel in the Source center
u_base_PixelFlags_flag_saturatedCenter	boolean		Saturated pixel in the Source center
u_base_PixelFlags_flag_crCenter	boolean		Cosmic ray in the Source center
u_base_PixelFlags_flag_suspectCenter	boolean		Source's center is close to suspect pixels
u_base_PixelFlags_flag_clippedCenter	boolean		Source center is close to CLIPPED pixels
u_base_PixelFlags_flag_sensor_edgeCenter	boolean		Source center is close to SENSOR_EDGE pixels
u_base_PixelFlags_flag_rejectedCenter	boolean		Source center is close to REJECTED pixels
u_base_PixelFlags_flag_inexact_psfCenter	boolean		Source center is close to INEXACT_PSF pixels
u_base_PixelFlags_flag_bright_objectCenter	boolean		Source center is close to BRIGHT_OBJECT pixels
u_base_PixelFlags_flag_clipped	boolean		Source footprint includes CLIPPED pixels
u_base_PixelFlags_flag_sensor_edge	boolean		Source footprint includes SENSOR_EDGE pixels
u_base_PixelFlags_flag_rejected	boolean		Source footprint includes REJECTED pixels
u_base_PixelFlags_flag_inexact_psf	boolean		Source footprint includes INEXACT_PSF pixels
u_base_PixelFlags_flag_bright_object	boolean		Source footprint includes BRIGHT_OBJECT pixels
u_good	boolean		True if the source has no flagged pixels.
u_base_ClassificationExtendedness_value	double		Set to 1 for extended sources, 0 for point sources.
u_base_ClassificationExtendedness_flag	boolean		Set to 1 for any fatal failure.
u_modelfit_CModel_instFlux	double	count	flux from the final cmodel fit
u_modelfit_CModel_instFluxErr	double	count	flux uncertainty from the final cmodel fit
u_modelfit_CModel_instFlux_inner	double	count	flux within the fit region, with no extrapolation
u_modelfit_CModel_fracDev	double		fraction of flux in de Vaucouleur component
u_modelfit_CModel_objective	double		-ln(likelihood) (chi^2) in cmodel fit
u_modelfit_CModel_apCorr	double		aperture correction applied to modelfit_CModel
u_modelfit_CModel_apCorrErr	double		standard deviation of aperture correction applied to modelfit_CModel
u_modelfit_CModel_flag	boolean		flag set if the final cmodel fit (or any previous fit) failed
u_modelfit_CModel_flag_region_maxArea	boolean		number of pixels in fit region exceeded the region.maxArea value
u_modelfit_CModel_flag_region_maxBadPixelFraction	boolean		the fraction of bad/clipped pixels in the fit region exceeded region.maxBadPixelFraction
u_modelfit_CModel_flag_badReference	boolean		The original fit in the reference catalog failed.
u_modelfit_CModel_flag_noShapeletPsf	boolean		the multishapelet fit to the PSF model did not succeed
u_modelfit_CModel_flag_badCentroid	boolean		input centroid was not within the fit region (probably because it''s not within the Footprint)
u_modelfit_CModel_flag_apCorr	boolean		set if unable to aperture correct modelfit_CModel
u_base_SdssCentroid_x	double	pixel	centroid from Sdss Centroid algorithm
u_base_SdssCentroid_y	double	pixel	centroid from Sdss Centroid algorithm
u_base_SdssCentroid_xErr	double	pixel	1-sigma uncertainty on x position
u_base_SdssCentroid_yErr	double	pixel	1-sigma uncertainty on y position
u_base_SdssCentroid_flag	boolean		General Failure Flag
u_base_SdssCentroid_flag_edge	boolean		Object too close to edge
u_base_SdssCentroid_flag_noSecondDerivative	boolean		Vanishing second derivative
u_base_SdssCentroid_flag_almostNoSecondDerivative	boolean		Almost vanishing second derivative
u_base_SdssCentroid_flag_notAtMaximum	boolean		Object is not at a maximum
u_base_SdssCentroid_flag_resetToPeak	boolean		set if CentroidChecker reset the centroid
u_base_SdssCentroid_flag_badInitialCentroid	boolean		whether the reference centroid is marked as bad
u_base_SdssShape_xx	double	pixel**2	elliptical Gaussian adaptive moments
u_base_SdssShape_yy	double	pixel**2	elliptical Gaussian adaptive moments
u_base_SdssShape_xy	double	pixel**2	elliptical Gaussian adaptive moments
u_base_SdssShape_xxErr	double	pixel**2	Standard deviation of xx moment
u_base_SdssShape_yyErr	double	pixel**2	Standard deviation of yy moment
u_base_SdssShape_xyErr	double	pixel**2	Standard deviation of xy moment
u_base_SdssShape_x	double	pixel	elliptical Gaussian adaptive moments
u_base_SdssShape_y	double	pixel	elliptical Gaussian adaptive moments
u_base_SdssShape_instFlux	double	count	elliptical Gaussian adaptive moments
u_base_SdssShape_instFluxErr	double	count	1-sigma instFlux uncertainty
u_base_SdssShape_psf_xx	double	pixel**2	adaptive moments of the PSF model at the object position
u_base_SdssShape_psf_yy	double	pixel**2	adaptive moments of the PSF model at the object position
u_base_SdssShape_psf_xy	double	pixel**2	adaptive moments of the PSF model at the object position
u_base_SdssShape_instFlux_xx_Cov	double	count.pixel**2	uncertainty covariance between base_SdssShape_instFlux and base_SdssShape_xx
u_base_SdssShape_instFlux_yy_Cov	double	count.pixel**2	uncertainty covariance between base_SdssShape_instFlux and base_SdssShape_yy
u_base_SdssShape_instFlux_xy_Cov	double	count.pixel**2	uncertainty covariance between base_SdssShape_instFlux and base_SdssShape_xy
u_base_SdssShape_flag	boolean		General Failure Flag
u_base_SdssShape_flag_unweightedBad	boolean		Both weighted and unweighted moments were invalid
u_base_SdssShape_flag_unweighted	boolean		Weighted moments converged to an invalid value; using unweighted moments
u_base_SdssShape_flag_shift	boolean		centroid shifted by more than the maximum allowed amount
u_base_SdssShape_flag_maxIter	boolean		Too many iterations in adaptive moments
u_base_SdssShape_flag_psf	boolean		Failure in measuring PSF model shape
u_base_SdssShape_flag_badCentroid	boolean		General Failure Flag
u_base_PsfFlux_instFlux	double	count	instFlux derived from linear least-squares fit of PSF model
u_base_PsfFlux_instFluxErr	double	count	1-sigma instFlux uncertainty
u_base_PsfFlux_area	double	pixel	effective area of PSF
u_base_PsfFlux_apCorr	double		aperture correction applied to base_PsfFlux
u_base_PsfFlux_apCorrErr	double		standard deviation of aperture correction applied to base_PsfFlux
u_base_PsfFlux_flag	boolean		General Failure Flag
u_base_PsfFlux_flag_noGoodPixels	boolean		not enough non-rejected pixels in data to attempt the fit
u_base_PsfFlux_flag_edge	boolean		object was too close to the edge of the image to use the full PSF model
u_base_PsfFlux_flag_apCorr	boolean		set if unable to aperture correct base_PsfFlux
u_base_PsfFlux_flag_badCentroid	boolean		General Failure Flag
u_base_InputCount_value	int		Number of images contributing at center, not including anyclipping
u_base_InputCount_flag	boolean		Set for any fatal failure
u_base_InputCount_flag_noInputs	boolean		No coadd inputs available
u_base_InputCount_flag_badCentroid	boolean		General Failure Flag
u_base_Variance_value	double		Variance at object position
u_base_Variance_flag	boolean		Set for any fatal failure
u_base_Variance_flag_emptyFootprint	boolean		Set to True when the footprint has no usable pixels
u_base_Variance_flag_badCentroid	boolean		General Failure Flag
u_base_LocalBackground_instFlux	double	count	background in annulus around source
u_base_LocalBackground_instFluxErr	double	count	1-sigma instFlux uncertainty
u_base_LocalBackground_flag	boolean		General Failure Flag
u_base_LocalBackground_flag_noGoodPixels	boolean		no good pixels in the annulus
u_base_LocalBackground_flag_noPsf	boolean		no PSF provided
u_base_LocalBackground_flag_badCentroid	boolean		General Failure Flag
u_modelfit_CModel_initial_instFlux	double	count	flux from the initial fit
u_modelfit_CModel_initial_instFluxErr	double	count	flux uncertainty from the initial fit
u_modelfit_CModel_initial_flux_inner	double	count	flux from the initial fit region, with no extrapolation
u_modelfit_CModel_exp_instFlux	double	count	flux from the exponential fit
u_modelfit_CModel_exp_instFluxErr	double	count	flux uncertainty from the exponential fit
u_modelfit_CModel_exp_flux_inner	double	count	flux from the exponential fit region, with no extrapolation
u_modelfit_CModel_dev_instFlux	double	count	flux from the de Vaucouleur fit
u_modelfit_CModel_dev_instFluxErr	double	count	flux uncertainty from the de Vaucouleur fit
u_modelfit_CModel_dev_flux_inner	double	count	flux from the de Vaucouleur fit region, with no extrapolation
u_modelfit_CModel_exp_apCorr	double		aperture correction applied to modelfit_CModel_exp
u_modelfit_CModel_exp_apCorrErr	double		standard deviation of aperture correction applied to modelfit_CModel_exp
u_modelfit_CModel_dev_apCorr	double		aperture correction applied to modelfit_CModel_dev
u_modelfit_CModel_dev_apCorrErr	double		standard deviation of aperture correction applied to modelfit_CModel_dev
u_modelfit_CModel_initial_apCorr	double		aperture correction applied to modelfit_CModel_initial
u_modelfit_CModel_initial_apCorrErr	double		standard deviation of aperture correction applied to modelfit_CModel_initial
u_modelfit_CModel_initial_flag	boolean		flag set when the flux for the initial flux failed
u_modelfit_CModel_initial_flag_badReference	boolean		The original fit in the reference catalog failed.
u_modelfit_CModel_initial_flag_numericError	boolean		numerical underflow or overflow in model evaluation; usually this means the prior was insufficient to regularize the fit, or all pixel values were zero.
u_modelfit_CModel_exp_flag	boolean		flag set when the flux for the exponential flux failed
u_modelfit_CModel_exp_flag_badReference	boolean		The original fit in the reference catalog failed.
u_modelfit_CModel_exp_flag_numericError	boolean		numerical underflow or overflow in model evaluation; usually this means the prior was insufficient to regularize the fit, or all pixel values were zero.
u_modelfit_CModel_dev_flag	boolean		flag set when the flux for the de Vaucouleur flux failed
u_modelfit_CModel_dev_flag_badReference	boolean		The original fit in the reference catalog failed.
u_modelfit_CModel_dev_flag_numericError	boolean		numerical underflow or overflow in model evaluation; usually this means the prior was insufficient to regularize the fit, or all pixel values were zero.
u_modelfit_CModel_exp_flag_apCorr	boolean		set if unable to aperture correct modelfit_CModel_exp
u_modelfit_CModel_dev_flag_apCorr	boolean		set if unable to aperture correct modelfit_CModel_dev
u_modelfit_CModel_initial_flag_apCorr	boolean		set if unable to aperture correct modelfit_CModel_initial
y_base_PixelFlags_flag	boolean		General failure flag, set if anything went wrong
y_base_PixelFlags_flag_offimage	boolean		Source center is off image
y_base_PixelFlags_flag_edge	boolean		Source is outside usable exposure region (masked EDGE or NO_DATA)
y_base_PixelFlags_flag_interpolated	boolean		Interpolated pixel in the Source footprint
y_base_PixelFlags_flag_saturated	boolean		Saturated pixel in the Source footprint
y_base_PixelFlags_flag_cr	boolean		Cosmic ray in the Source footprint
y_base_PixelFlags_flag_bad	boolean		Bad pixel in the Source footprint
y_base_PixelFlags_flag_suspect	boolean		Source's footprint includes suspect pixels
y_base_PixelFlags_flag_interpolatedCenter	boolean		Interpolated pixel in the Source center
y_base_PixelFlags_flag_saturatedCenter	boolean		Saturated pixel in the Source center
y_base_PixelFlags_flag_crCenter	boolean		Cosmic ray in the Source center
y_base_PixelFlags_flag_suspectCenter	boolean		Source's center is close to suspect pixels
y_base_PixelFlags_flag_clippedCenter	boolean		Source center is close to CLIPPED pixels
y_base_PixelFlags_flag_sensor_edgeCenter	boolean		Source center is close to SENSOR_EDGE pixels
y_base_PixelFlags_flag_rejectedCenter	boolean		Source center is close to REJECTED pixels
y_base_PixelFlags_flag_inexact_psfCenter	boolean		Source center is close to INEXACT_PSF pixels
y_base_PixelFlags_flag_bright_objectCenter	boolean		Source center is close to BRIGHT_OBJECT pixels
y_base_PixelFlags_flag_clipped	boolean		Source footprint includes CLIPPED pixels
y_base_PixelFlags_flag_sensor_edge	boolean		Source footprint includes SENSOR_EDGE pixels
y_base_PixelFlags_flag_rejected	boolean		Source footprint includes REJECTED pixels
y_base_PixelFlags_flag_inexact_psf	boolean		Source footprint includes INEXACT_PSF pixels
y_base_PixelFlags_flag_bright_object	boolean		Source footprint includes BRIGHT_OBJECT pixels
y_good	boolean		True if the source has no flagged pixels.
y_base_ClassificationExtendedness_value	double		Set to 1 for extended sources, 0 for point sources.
y_base_ClassificationExtendedness_flag	boolean		Set to 1 for any fatal failure.
y_modelfit_CModel_instFlux	double	count	flux from the final cmodel fit
y_modelfit_CModel_instFluxErr	double	count	flux uncertainty from the final cmodel fit
y_modelfit_CModel_instFlux_inner	double	count	flux within the fit region, with no extrapolation
y_modelfit_CModel_fracDev	double		fraction of flux in de Vaucouleur component
y_modelfit_CModel_objective	double		-ln(likelihood) (chi^2) in cmodel fit
y_modelfit_CModel_apCorr	double		aperture correction applied to modelfit_CModel
y_modelfit_CModel_apCorrErr	double		standard deviation of aperture correction applied to modelfit_CModel
y_modelfit_CModel_flag	boolean		flag set if the final cmodel fit (or any previous fit) failed
y_modelfit_CModel_flag_region_maxArea	boolean		number of pixels in fit region exceeded the region.maxArea value
y_modelfit_CModel_flag_region_maxBadPixelFraction	boolean		the fraction of bad/clipped pixels in the fit region exceeded region.maxBadPixelFraction
y_modelfit_CModel_flag_badReference	boolean		The original fit in the reference catalog failed.
y_modelfit_CModel_flag_noShapeletPsf	boolean		the multishapelet fit to the PSF model did not succeed
y_modelfit_CModel_flag_badCentroid	boolean		input centroid was not within the fit region (probably because it''s not within the Footprint)
y_modelfit_CModel_flag_apCorr	boolean		set if unable to aperture correct modelfit_CModel
y_base_SdssCentroid_x	double	pixel	centroid from Sdss Centroid algorithm
y_base_SdssCentroid_y	double	pixel	centroid from Sdss Centroid algorithm
y_base_SdssCentroid_xErr	double	pixel	1-sigma uncertainty on x position
y_base_SdssCentroid_yErr	double	pixel	1-sigma uncertainty on y position
y_base_SdssCentroid_flag	boolean		General Failure Flag
y_base_SdssCentroid_flag_edge	boolean		Object too close to edge
y_base_SdssCentroid_flag_noSecondDerivative	boolean		Vanishing second derivative
y_base_SdssCentroid_flag_almostNoSecondDerivative	boolean		Almost vanishing second derivative
y_base_SdssCentroid_flag_notAtMaximum	boolean		Object is not at a maximum
y_base_SdssCentroid_flag_resetToPeak	boolean		set if CentroidChecker reset the centroid
y_base_SdssCentroid_flag_badInitialCentroid	boolean		whether the reference centroid is marked as bad
y_base_SdssShape_xx	double	pixel**2	elliptical Gaussian adaptive moments
y_base_SdssShape_yy	double	pixel**2	elliptical Gaussian adaptive moments
y_base_SdssShape_xy	double	pixel**2	elliptical Gaussian adaptive moments
y_base_SdssShape_xxErr	double	pixel**2	Standard deviation of xx moment
y_base_SdssShape_yyErr	double	pixel**2	Standard deviation of yy moment
y_base_SdssShape_xyErr	double	pixel**2	Standard deviation of xy moment
y_base_SdssShape_x	double	pixel	elliptical Gaussian adaptive moments
y_base_SdssShape_y	double	pixel	elliptical Gaussian adaptive moments
y_base_SdssShape_instFlux	double	count	elliptical Gaussian adaptive moments
y_base_SdssShape_instFluxErr	double	count	1-sigma instFlux uncertainty
y_base_SdssShape_psf_xx	double	pixel**2	adaptive moments of the PSF model at the object position
y_base_SdssShape_psf_yy	double	pixel**2	adaptive moments of the PSF model at the object position
y_base_SdssShape_psf_xy	double	pixel**2	adaptive moments of the PSF model at the object position
y_base_SdssShape_instFlux_xx_Cov	double	count.pixel**2	uncertainty covariance between base_SdssShape_instFlux and base_SdssShape_xx
y_base_SdssShape_instFlux_yy_Cov	double	count.pixel**2	uncertainty covariance between base_SdssShape_instFlux and base_SdssShape_yy
y_base_SdssShape_instFlux_xy_Cov	double	count.pixel**2	uncertainty covariance between base_SdssShape_instFlux and base_SdssShape_xy
y_base_SdssShape_flag	boolean		General Failure Flag
y_base_SdssShape_flag_unweightedBad	boolean		Both weighted and unweighted moments were invalid
y_base_SdssShape_flag_unweighted	boolean		Weighted moments converged to an invalid value; using unweighted moments
y_base_SdssShape_flag_shift	boolean		centroid shifted by more than the maximum allowed amount
y_base_SdssShape_flag_maxIter	boolean		Too many iterations in adaptive moments
y_base_SdssShape_flag_psf	boolean		Failure in measuring PSF model shape
y_base_SdssShape_flag_badCentroid	boolean		General Failure Flag
y_base_PsfFlux_instFlux	double	count	instFlux derived from linear least-squares fit of PSF model
y_base_PsfFlux_instFluxErr	double	count	1-sigma instFlux uncertainty
y_base_PsfFlux_area	double	pixel	effective area of PSF
y_base_PsfFlux_apCorr	double		aperture correction applied to base_PsfFlux
y_base_PsfFlux_apCorrErr	double		standard deviation of aperture correction applied to base_PsfFlux
y_base_PsfFlux_flag	boolean		General Failure Flag
y_base_PsfFlux_flag_noGoodPixels	boolean		not enough non-rejected pixels in data to attempt the fit
y_base_PsfFlux_flag_edge	boolean		object was too close to the edge of the image to use the full PSF model
y_base_PsfFlux_flag_apCorr	boolean		set if unable to aperture correct base_PsfFlux
y_base_PsfFlux_flag_badCentroid	boolean		General Failure Flag
y_base_InputCount_value	int		Number of images contributing at center, not including anyclipping
y_base_InputCount_flag	boolean		Set for any fatal failure
y_base_InputCount_flag_noInputs	boolean		No coadd inputs available
y_base_InputCount_flag_badCentroid	boolean		General Failure Flag
y_base_Variance_value	double		Variance at object position
y_base_Variance_flag	boolean		Set for any fatal failure
y_base_Variance_flag_emptyFootprint	boolean		Set to True when the footprint has no usable pixels
y_base_Variance_flag_badCentroid	boolean		General Failure Flag
y_base_LocalBackground_instFlux	double	count	background in annulus around source
y_base_LocalBackground_instFluxErr	double	count	1-sigma instFlux uncertainty
y_base_LocalBackground_flag	boolean		General Failure Flag
y_base_LocalBackground_flag_noGoodPixels	boolean		no good pixels in the annulus
y_base_LocalBackground_flag_noPsf	boolean		no PSF provided
y_base_LocalBackground_flag_badCentroid	boolean		General Failure Flag
y_modelfit_CModel_initial_instFlux	double	count	flux from the initial fit
y_modelfit_CModel_initial_instFluxErr	double	count	flux uncertainty from the initial fit
y_modelfit_CModel_initial_flux_inner	double	count	flux from the initial fit region, with no extrapolation
y_modelfit_CModel_exp_instFlux	double	count	flux from the exponential fit
y_modelfit_CModel_exp_instFluxErr	double	count	flux uncertainty from the exponential fit
y_modelfit_CModel_exp_flux_inner	double	count	flux from the exponential fit region, with no extrapolation
y_modelfit_CModel_dev_instFlux	double	count	flux from the de Vaucouleur fit
y_modelfit_CModel_dev_instFluxErr	double	count	flux uncertainty from the de Vaucouleur fit
y_modelfit_CModel_dev_flux_inner	double	count	flux from the de Vaucouleur fit region, with no extrapolation
y_modelfit_CModel_exp_apCorr	double		aperture correction applied to modelfit_CModel_exp
y_modelfit_CModel_exp_apCorrErr	double		standard deviation of aperture correction applied to modelfit_CModel_exp
y_modelfit_CModel_dev_apCorr	double		aperture correction applied to modelfit_CModel_dev
y_modelfit_CModel_dev_apCorrErr	double		standard deviation of aperture correction applied to modelfit_CModel_dev
y_modelfit_CModel_initial_apCorr	double		aperture correction applied to modelfit_CModel_initial
y_modelfit_CModel_initial_apCorrErr	double		standard deviation of aperture correction applied to modelfit_CModel_initial
y_modelfit_CModel_initial_flag	boolean		flag set when the flux for the initial flux failed
y_modelfit_CModel_initial_flag_badReference	boolean		The original fit in the reference catalog failed.
y_modelfit_CModel_initial_flag_numericError	boolean		numerical underflow or overflow in model evaluation; usually this means the prior was insufficient to regularize the fit, or all pixel values were zero.
y_modelfit_CModel_exp_flag	boolean		flag set when the flux for the exponential flux failed
y_modelfit_CModel_exp_flag_badReference	boolean		The original fit in the reference catalog failed.
y_modelfit_CModel_exp_flag_numericError	boolean		numerical underflow or overflow in model evaluation; usually this means the prior was insufficient to regularize the fit, or all pixel values were zero.
y_modelfit_CModel_dev_flag	boolean		flag set when the flux for the de Vaucouleur flux failed
y_modelfit_CModel_dev_flag_badReference	boolean		The original fit in the reference catalog failed.
y_modelfit_CModel_dev_flag_numericError	boolean		numerical underflow or overflow in model evaluation; usually this means the prior was insufficient to regularize the fit, or all pixel values were zero.
y_modelfit_CModel_exp_flag_apCorr	boolean		set if unable to aperture correct modelfit_CModel_exp
y_modelfit_CModel_dev_flag_apCorr	boolean		set if unable to aperture correct modelfit_CModel_dev
y_modelfit_CModel_initial_flag_apCorr	boolean		set if unable to aperture correct modelfit_CModel_initial
z_base_PixelFlags_flag	boolean		General failure flag, set if anything went wrong
z_base_PixelFlags_flag_offimage	boolean		Source center is off image
z_base_PixelFlags_flag_edge	boolean		Source is outside usable exposure region (masked EDGE or NO_DATA)
z_base_PixelFlags_flag_interpolated	boolean		Interpolated pixel in the Source footprint
z_base_PixelFlags_flag_saturated	boolean		Saturated pixel in the Source footprint
z_base_PixelFlags_flag_cr	boolean		Cosmic ray in the Source footprint
z_base_PixelFlags_flag_bad	boolean		Bad pixel in the Source footprint
z_base_PixelFlags_flag_suspect	boolean		Source's footprint includes suspect pixels
z_base_PixelFlags_flag_interpolatedCenter	boolean		Interpolated pixel in the Source center
z_base_PixelFlags_flag_saturatedCenter	boolean		Saturated pixel in the Source center
z_base_PixelFlags_flag_crCenter	boolean		Cosmic ray in the Source center
z_base_PixelFlags_flag_suspectCenter	boolean		Source's center is close to suspect pixels
z_base_PixelFlags_flag_clippedCenter	boolean		Source center is close to CLIPPED pixels
z_base_PixelFlags_flag_sensor_edgeCenter	boolean		Source center is close to SENSOR_EDGE pixels
z_base_PixelFlags_flag_rejectedCenter	boolean		Source center is close to REJECTED pixels
z_base_PixelFlags_flag_inexact_psfCenter	boolean		Source center is close to INEXACT_PSF pixels
z_base_PixelFlags_flag_bright_objectCenter	boolean		Source center is close to BRIGHT_OBJECT pixels
z_base_PixelFlags_flag_clipped	boolean		Source footprint includes CLIPPED pixels
z_base_PixelFlags_flag_sensor_edge	boolean		Source footprint includes SENSOR_EDGE pixels
z_base_PixelFlags_flag_rejected	boolean		Source footprint includes REJECTED pixels
z_base_PixelFlags_flag_inexact_psf	boolean		Source footprint includes INEXACT_PSF pixels
z_base_PixelFlags_flag_bright_object	boolean		Source footprint includes BRIGHT_OBJECT pixels
z_good	boolean		True if the source has no flagged pixels.
z_base_ClassificationExtendedness_value	double		Set to 1 for extended sources, 0 for point sources.
z_base_ClassificationExtendedness_flag	boolean		Set to 1 for any fatal failure.
z_modelfit_CModel_instFlux	double	count	flux from the final cmodel fit
z_modelfit_CModel_instFluxErr	double	count	flux uncertainty from the final cmodel fit
z_modelfit_CModel_instFlux_inner	double	count	flux within the fit region, with no extrapolation
z_modelfit_CModel_fracDev	double		fraction of flux in de Vaucouleur component
z_modelfit_CModel_objective	double		-ln(likelihood) (chi^2) in cmodel fit
z_modelfit_CModel_apCorr	double		aperture correction applied to modelfit_CModel
z_modelfit_CModel_apCorrErr	double		standard deviation of aperture correction applied to modelfit_CModel
z_modelfit_CModel_flag	boolean		flag set if the final cmodel fit (or any previous fit) failed
z_modelfit_CModel_flag_region_maxArea	boolean		number of pixels in fit region exceeded the region.maxArea value
z_modelfit_CModel_flag_region_maxBadPixelFraction	boolean		the fraction of bad/clipped pixels in the fit region exceeded region.maxBadPixelFraction
z_modelfit_CModel_flag_badReference	boolean		The original fit in the reference catalog failed.
z_modelfit_CModel_flag_noShapeletPsf	boolean		the multishapelet fit to the PSF model did not succeed
z_modelfit_CModel_flag_badCentroid	boolean		input centroid was not within the fit region (probably because it''s not within the Footprint)
z_modelfit_CModel_flag_apCorr	boolean		set if unable to aperture correct modelfit_CModel
z_base_SdssCentroid_x	double	pixel	centroid from Sdss Centroid algorithm
z_base_SdssCentroid_y	double	pixel	centroid from Sdss Centroid algorithm
z_base_SdssCentroid_xErr	double	pixel	1-sigma uncertainty on x position
z_base_SdssCentroid_yErr	double	pixel	1-sigma uncertainty on y position
z_base_SdssCentroid_flag	boolean		General Failure Flag
z_base_SdssCentroid_flag_edge	boolean		Object too close to edge
z_base_SdssCentroid_flag_noSecondDerivative	boolean		Vanishing second derivative
z_base_SdssCentroid_flag_almostNoSecondDerivative	boolean		Almost vanishing second derivative
z_base_SdssCentroid_flag_notAtMaximum	boolean		Object is not at a maximum
z_base_SdssCentroid_flag_resetToPeak	boolean		set if CentroidChecker reset the centroid
z_base_SdssCentroid_flag_badInitialCentroid	boolean		whether the reference centroid is marked as bad
z_base_SdssShape_xx	double	pixel**2	elliptical Gaussian adaptive moments
z_base_SdssShape_yy	double	pixel**2	elliptical Gaussian adaptive moments
z_base_SdssShape_xy	double	pixel**2	elliptical Gaussian adaptive moments
z_base_SdssShape_xxErr	double	pixel**2	Standard deviation of xx moment
z_base_SdssShape_yyErr	double	pixel**2	Standard deviation of yy moment
z_base_SdssShape_xyErr	double	pixel**2	Standard deviation of xy moment
z_base_SdssShape_x	double	pixel	elliptical Gaussian adaptive moments
z_base_SdssShape_y	double	pixel	elliptical Gaussian adaptive moments
z_base_SdssShape_instFlux	double	count	elliptical Gaussian adaptive moments
z_base_SdssShape_instFluxErr	double	count	1-sigma instFlux uncertainty
z_base_SdssShape_psf_xx	double	pixel**2	adaptive moments of the PSF model at the object position
z_base_SdssShape_psf_yy	double	pixel**2	adaptive moments of the PSF model at the object position
z_base_SdssShape_psf_xy	double	pixel**2	adaptive moments of the PSF model at the object position
z_base_SdssShape_instFlux_xx_Cov	double	count.pixel**2	uncertainty covariance between base_SdssShape_instFlux and base_SdssShape_xx
z_base_SdssShape_instFlux_yy_Cov	double	count.pixel**2	uncertainty covariance between base_SdssShape_instFlux and base_SdssShape_yy
z_base_SdssShape_instFlux_xy_Cov	double	count.pixel**2	uncertainty covariance between base_SdssShape_instFlux and base_SdssShape_xy
z_base_SdssShape_flag	boolean		General Failure Flag
z_base_SdssShape_flag_unweightedBad	boolean		Both weighted and unweighted moments were invalid
z_base_SdssShape_flag_unweighted	boolean		Weighted moments converged to an invalid value; using unweighted moments
z_base_SdssShape_flag_shift	boolean		centroid shifted by more than the maximum allowed amount
z_base_SdssShape_flag_maxIter	boolean		Too many iterations in adaptive moments
z_base_SdssShape_flag_psf	boolean		Failure in measuring PSF model shape
z_base_SdssShape_flag_badCentroid	boolean		General Failure Flag
z_base_PsfFlux_instFlux	double	count	instFlux derived from linear least-squares fit of PSF model
z_base_PsfFlux_instFluxErr	double	count	1-sigma instFlux uncertainty
z_base_PsfFlux_area	double	pixel	effective area of PSF
z_base_PsfFlux_apCorr	double		aperture correction applied to base_PsfFlux
z_base_PsfFlux_apCorrErr	double		standard deviation of aperture correction applied to base_PsfFlux
z_base_PsfFlux_flag	boolean		General Failure Flag
z_base_PsfFlux_flag_noGoodPixels	boolean		not enough non-rejected pixels in data to attempt the fit
z_base_PsfFlux_flag_edge	boolean		object was too close to the edge of the image to use the full PSF model
z_base_PsfFlux_flag_apCorr	boolean		set if unable to aperture correct base_PsfFlux
z_base_PsfFlux_flag_badCentroid	boolean		General Failure Flag
z_base_InputCount_value	int		Number of images contributing at center, not including anyclipping
z_base_InputCount_flag	boolean		Set for any fatal failure
z_base_InputCount_flag_noInputs	boolean		No coadd inputs available
z_base_InputCount_flag_badCentroid	boolean		General Failure Flag
z_base_Variance_value	double		Variance at object position
z_base_Variance_flag	boolean		Set for any fatal failure
z_base_Variance_flag_emptyFootprint	boolean		Set to True when the footprint has no usable pixels
z_base_Variance_flag_badCentroid	boolean		General Failure Flag
z_base_LocalBackground_instFlux	double	count	background in annulus around source
z_base_LocalBackground_instFluxErr	double	count	1-sigma instFlux uncertainty
z_base_LocalBackground_flag	boolean		General Failure Flag
z_base_LocalBackground_flag_noGoodPixels	boolean		no good pixels in the annulus
z_base_LocalBackground_flag_noPsf	boolean		no PSF provided
z_base_LocalBackground_flag_badCentroid	boolean		General Failure Flag
z_modelfit_CModel_initial_instFlux	double	count	flux from the initial fit
z_modelfit_CModel_initial_instFluxErr	double	count	flux uncertainty from the initial fit
z_modelfit_CModel_initial_flux_inner	double	count	flux from the initial fit region, with no extrapolation
z_modelfit_CModel_exp_instFlux	double	count	flux from the exponential fit
z_modelfit_CModel_exp_instFluxErr	double	count	flux uncertainty from the exponential fit
z_modelfit_CModel_exp_flux_inner	double	count	flux from the exponential fit region, with no extrapolation
z_modelfit_CModel_dev_instFlux	double	count	flux from the de Vaucouleur fit
z_modelfit_CModel_dev_instFluxErr	double	count	flux uncertainty from the de Vaucouleur fit
z_modelfit_CModel_dev_flux_inner	double	count	flux from the de Vaucouleur fit region, with no extrapolation
z_modelfit_CModel_exp_apCorr	double		aperture correction applied to modelfit_CModel_exp
z_modelfit_CModel_exp_apCorrErr	double		standard deviation of aperture correction applied to modelfit_CModel_exp
z_modelfit_CModel_dev_apCorr	double		aperture correction applied to modelfit_CModel_dev
z_modelfit_CModel_dev_apCorrErr	double		standard deviation of aperture correction applied to modelfit_CModel_dev
z_modelfit_CModel_initial_apCorr	double		aperture correction applied to modelfit_CModel_initial
z_modelfit_CModel_initial_apCorrErr	double		standard deviation of aperture correction applied to modelfit_CModel_initial
z_modelfit_CModel_initial_flag	boolean		flag set when the flux for the initial flux failed
z_modelfit_CModel_initial_flag_badReference	boolean		The original fit in the reference catalog failed.
z_modelfit_CModel_initial_flag_numericError	boolean		numerical underflow or overflow in model evaluation; usually this means the prior was insufficient to regularize the fit, or all pixel values were zero.
z_modelfit_CModel_exp_flag	boolean		flag set when the flux for the exponential flux failed
z_modelfit_CModel_exp_flag_badReference	boolean		The original fit in the reference catalog failed.
z_modelfit_CModel_exp_flag_numericError	boolean		numerical underflow or overflow in model evaluation; usually this means the prior was insufficient to regularize the fit, or all pixel values were zero.
z_modelfit_CModel_dev_flag	boolean		flag set when the flux for the de Vaucouleur flux failed
z_modelfit_CModel_dev_flag_badReference	boolean		The original fit in the reference catalog failed.
z_modelfit_CModel_dev_flag_numericError	boolean		numerical underflow or overflow in model evaluation; usually this means the prior was insufficient to regularize the fit, or all pixel values were zero.
z_modelfit_CModel_exp_flag_apCorr	boolean		set if unable to aperture correct modelfit_CModel_exp
z_modelfit_CModel_dev_flag_apCorr	boolean		set if unable to aperture correct modelfit_CModel_dev
z_modelfit_CModel_initial_flag_apCorr	boolean		set if unable to aperture correct modelfit_CModel_initial

object

The object table from the DESC DC2 simulated sky survey as described in arXiv:2101.04855. Includes astrometric and photometric parameters for objects detected in coadded images. (137 columns)

Column Name	Data Type	Unit	Description [UCD]
objectId	long		Unique id. [meta.id;src]
parentObjectId	long		Id of the parent object this object has been deblended from, if any.
ra	double	deg	RA-coordinate of the center of the object for the Point Source model. [pos.eq.ra]
dec	double	deg	Decl-coordinate of the center of the object for the Point Source model. [pos.eq.dec]
tract	long		tract ID
patch	char		patch ID
x	double	pixel	2D centroid location (x coordinate) [pos.cartesian.x]
y	double	pixel	2D centroid location (y coordinate) [pos.cartesian.y]
xErr	float	pixel	error on x [stat.error;pos.cartesian.x]
yErr	float	pixel	error on Y [stat.error;pos.cartesian.y]
xy_flag	boolean		Flag for issues with x and y
psNdata	float		Number of data points (pixels) used to fit the model
extendedness	double		0:star, 1:extended. DM Stack `base_ClassificationExtendedness_value
blendedness	double		measure of how flux is affected by neighbors (1 - flux.child/flux.parent) (see 4.9.11 of [1705.06766](https://arxiv.org/abs/1705.06766))
Ixx_pixel	double	nmgy.arcsec**2	Adaptive second moment of the source intensity across bands.
Iyy_pixel	double	nmgy.arcsec**2	Adaptive second moment of the source intensity across bands.
Ixy_pixel	double	nmgy.arcsec**2	Adaptive second moment of the source intensity across bands.
I_flag	boolean		Flag for issues with Ixx_pixel, Iyy_pixel, and Ixy_pixel.
IxxPSF_pixel	double	nmgy.arcsec**2	Adaptive second moment of the PSF across bands
IyyPSF_pixel	double	nmgy.arcsec**2	Adaptive second moment of the PSF across bands
IxyPSF_pixel	double	nmgy.arcsec**2	Adaptive second moment of the PSF across bands
mag_g_cModel	double	mag	Composite model (cModel) magnitude for g filter fitted by cModel
mag_i_cModel	double	mag	Composite model (cModel) magnitude for i filter fitted by cModel
mag_r_cModel	double	mag	Composite model (cModel) magnitude for r filter fitted by cModel
mag_u_cModel	double	mag	Composite model (cModel) magnitude for u filter fitted by cModel
mag_y_cModel	double	mag	Composite model (cModel) magnitude for y filter fitted by cModel
mag_z_cModel	double	mag	Composite model (cModel) magnitude for z filter fitted by cModel
magerr_g_cModel	double	mag	Error on mag_g_cModel [stat.error]
magerr_i_cModel	double	mag	Error on mag_i_cModel [stat.error]
magerr_r_cModel	double	mag	Error on mag_r_cModel [stat.error]
magerr_u_cModel	double	mag	Error on mag_u_cModel [stat.error]
magerr_y_cModel	double	mag	Error on mag_y_cModel [stat.error]
magerr_z_cModel	double	mag	Error on mag_z_cModel [stat.error]
snr_g_cModel	double		Signal to noise ratio for magnitude for g filter fitted by cModel [stat.snr]
snr_i_cModel	double		Signal to noise ratio for magnitude for i filter fitted by cModel [stat.snr]
snr_r_cModel	double		Signal to noise ratio for magnitude for r filter fitted by cModel [stat.snr]
snr_u_cModel	double		Signal to noise ratio for magnitude for u filter fitted by cModel [stat.snr]
snr_y_cModel	double		Signal to noise ratio for magnitude for y filter fitted by cModel [stat.snr]
snr_z_cModel	double		Signal to noise ratio for magnitude for z filter fitted by cModel [stat.snr]
psFlux_g	double	nmgy	Calibrated flux for Point Source model for g filter. [phot.count]
psFlux_i	double	nmgy	Calibrated flux for Point Source model for i filter. [phot.count]
psFlux_r	double	nmgy	Calibrated flux for Point Source model for r filter. [phot.count]
psFlux_u	double	nmgy	Calibrated flux for Point Source model for u filter. [phot.count]
psFlux_y	double	nmgy	Calibrated flux for Point Source model for y filter. [phot.count]
psFlux_z	double	nmgy	Calibrated flux for Point Source model for z filter. [phot.count]
psFlux_flag_g	boolean		flag for issues with psFlux_g
psFlux_flag_i	boolean		flag for issues with psFlux_i
psFlux_flag_r	boolean		flag for issues with psFlux_r
psFlux_flag_u	boolean		flag for issues with psFlux_u
psFlux_flag_y	boolean		flag for issues with psFlux_y
psFlux_flag_z	boolean		flag for issues with psFlux_zs
psFluxErr_g	double	nmgy	Uncertainty of psFlux_g. [stat.error;phot.count]
psFluxErr_i	double	nmgy	Uncertainty of psFlux_i. [stat.error;phot.count]
psFluxErr_r	double	nmgy	Uncertainty of psFlux_r. [stat.error;phot.count]
psFluxErr_u	double	nmgy	Uncertainty of psFlux_u. [stat.error;phot.count]
psFluxErr_y	double	nmgy	Uncertainty of psFlux_y. [stat.error;phot.count]
psFluxErr_z	double	nmgy	Uncertainty of psFlux_z. [stat.error;phot.count]
mag_g	double	mag	Magnitude for g filter
mag_i	double	mag	Magnitude for i filter
mag_r	double	mag	Magnitude for r filter
mag_u	double	mag	Magnitude for u filter
mag_y	double	mag	Magnitude for y filter
mag_z	double	mag	magnitude for z filter
magerr_g	double	mag	Error on mag_g [stat.error]
magerr_i	double	mag	Error on mag_i [stat.error]
magerr_r	double	mag	Error on mag_r [stat.error]
magerr_u	double	mag	Error on mag_u [stat.error]
magerr_y	double	mag	Error on mag_y [stat.error]
magerr_z	double	mag	Error on mag_z [stat.error]
I_flag_g	boolean		Flag for issues with second moments of source intensity, g band
I_flag_i	boolean		Flag for issues with second moments of source intensity, i band
I_flag_r	boolean		Flag for issues with second moments of source intensity, r band
I_flag_u	boolean		Flag for issues with second moments of source intensity, u band
I_flag_y	boolean		Flag for issues with second moments of source intensity, y band
I_flag_z	boolean		Flag for issues with second moments of source intensity, z band
Ixx_pixel_g	double	arcsec**2	Adaptive second moment of the source intensity, g band
Ixx_pixel_i	double	arcsec**2	Adaptive second moment of the source intensity, i band
Ixx_pixel_r	double	arcsec**2	Adaptive second moment of the source intensity, r band
Ixx_pixel_u	double	arcsec**2	Adaptive second moment of the source intensity, u band
Ixx_pixel_y	double	arcsec**2	Adaptive second moment of the source intensity, y band
Ixx_pixel_z	double	arcsec**2	Adaptive second moment of the source intensity, z band
Iyy_pixel_g	double	arcsec**2	Adaptive second moment of the source intensity, g band
Iyy_pixel_i	double	arcsec**2	Adaptive second moment of the source intensity, i band
Iyy_pixel_r	double	arcsec**2	Adaptive second moment of the source intensity, r band
Iyy_pixel_u	double	arcsec**2	Adaptive second moment of the source intensity, u band
Iyy_pixel_y	double	arcsec**2	Adaptive second moment of the source intensity, y band
Iyy_pixel_z	double	arcsec**2	Adaptive second moment of the source intensity, z band
Ixy_pixel_g	double	arcsec**2	Adaptive second moment of the source intensity, g band
Ixy_pixel_i	double	arcsec**2	Adaptive second moment of the source intensity, i band
Ixy_pixel_r	double	arcsec**2	Adaptive second moment of the source intensity, r band
Ixy_pixel_u	double	arcsec**2	Adaptive second moment of the source intensity, u band
Ixy_pixel_y	double	arcsec**2	Adaptive second moment of the source intensity, y band
Ixy_pixel_z	double	arcsec**2	Adaptive second moment of the source intensity, z band
IxxPSF_pixel_g	double	arcsec**2	Adaptive second moment of the PSF, g band
IxxPSF_pixel_i	double	arcsec**2	Adaptive second moment of the PSF, i band
IxxPSF_pixel_r	double	arcsec**2	Adaptive second moment of the PSF, r band
IxxPSF_pixel_u	double	arcsec**2	Adaptive second moment of the PSF, u band
IxxPSF_pixel_y	double	arcsec**2	Adaptive second moment of the PSF, y band
IxxPSF_pixel_z	double	arcsec**2	Adaptive second moment of the PSF, z band
IyyPSF_pixel_g	double	arcsec**2	Adaptive second moment of the PSF, g band
IyyPSF_pixel_i	double	arcsec**2	Adaptive second moment of the PSF, i band
IyyPSF_pixel_r	double	arcsec**2	Adaptive second moment of the PSF, r band
IyyPSF_pixel_u	double	arcsec**2	Adaptive second moment of the PSF, u band
IyyPSF_pixel_y	double	arcsec**2	Adaptive second moment of the PSF, y band
IyyPSF_pixel_z	double	arcsec**2	Adaptive second moment of the PSF, z band
IxyPSF_pixel_g	double	arcsec**2	Adaptive second moment of the PSF, g band
IxyPSF_pixel_i	double	arcsec**2	Adaptive second moment of the PSF, i band
IxyPSF_pixel_r	double	arcsec**2	Adaptive second moment of the PSF, r band
IxyPSF_pixel_u	double	arcsec**2	Adaptive second moment of the PSF, u band
IxyPSF_pixel_y	double	arcsec**2	Adaptive second moment of the PSF, y band
IxyPSF_pixel_z	double	arcsec**2	Adaptive second moment of the PSF, z band
good	boolean		True if the source has no flagged pixels
clean	boolean		True if the source has no flagged pixels and is not deblended
cModelFlux_g	double		composite model (CModel) flux in _<band>
cModelFlux_i	double		composite model (CModel) flux in _<band>
cModelFlux_r	double		composite model (CModel) flux in _<band>
cModelFlux_u	double		composite model (CModel) flux in _<band>
cModelFlux_y	double		composite model (CModel) flux in _<band>
cModelFlux_z	double		composite model (CModel) flux in _<band>
cModelFluxErr_g	double		Error value for cModel flux in _<band>
cModelFluxErr_i	double		Error value for cModel flux in _<band>
cModelFluxErr_r	double		Error value for cModel flux in _<band>
cModelFluxErr_u	double		Error value for cModel flux in _<band>
cModelFluxErr_y	double		Error value for cModel flux in _<band>
cModelFluxErr_z	double		Error value for cModel flux in _<band>
cModelFlux_flag_g	boolean		Flag for issues with cModelFlux_flag_<band>
cModelFlux_flag_i	boolean		Flag for issues with cModelFlux_flag_<band>
cModelFlux_flag_r	boolean		Flag for issues with cModelFlux_flag_<band>
cModelFlux_flag_u	boolean		Flag for issues with cModelFlux_flag_<band>
cModelFlux_flag_y	boolean		Flag for issues with cModelFlux_flag_<band>
cModelFlux_flag_z	boolean		Flag for issues with cModelFlux_flag_<band>
psf_fwhm_g	double		PSF FWHM calculated from base_SdssShape
psf_fwhm_i	double		PSF FWHM calculated from base_SdssShape
psf_fwhm_r	double		PSF FWHM calculated from base_SdssShape
psf_fwhm_u	double		PSF FWHM calculated from base_SdssShape
psf_fwhm_y	double		PSF FWHM calculated from base_SdssShape
psf_fwhm_z	double		PSF FWHM calculated from base_SdssShape

truth_match

The truth-match table for the DESC DC2's object table as described in arXiv:2101.04855. Includes the noiseless astrometric and photometric parameters and the best matches to the object table. (30 columns)

Column Name	Data Type	Unit	Description [UCD]
id	char		Unique object ID
host_galaxy	long		ID of the host galaxy for a SN/AGN entry (-1 for other truth types)
ra	double	deg	Right Ascension [pos.eq.ra]
dec	double	deg	Declination [pos.eq.dec]
redshift	float		Redshift
is_variable	int		1 for a variable source
is_pointsource	int		1 for a point source
flux_u	float	nJy	Static flux value in u
flux_g	float	nJy	Static flux value in g
flux_r	float	nJy	Static flux value in r
flux_i	float	nJy	Static flux value in i
flux_z	float	nJy	Static flux value in z
flux_y	float	nJy	Static flux value in y
flux_u_noMW	float	nJy	Static flux value in u, without Milky Way extinction (i.e., dereddened)
flux_g_noMW	float	nJy	Static flux value in g, without Milky Way extinction (i.e., dereddened)
flux_r_noMW	float	nJy	Static flux value in r, without Milky Way extinction (i.e., dereddened)
flux_i_noMW	float	nJy	Static flux value in i, without Milky Way extinction (i.e., dereddened)
flux_z_noMW	float	nJy	Static flux value in z, without Milky Way extinction (i.e., dereddened)
flux_y_noMW	float	nJy	Static flux value in y, without Milky Way extinction (i.e., dereddened)
mag_r	float	mag	Magnitude in r
tract	long		Tract ID in Sky Map
patch	char		Patch ID in Sky Map (as a string, x,y)
cosmodc2_hp	long		Healpix ID in cosmoDC2 (for galaxies only; -1 for stars and SNe)
cosmodc2_id	long		Galaxy ID in cosmoDC2 (for galaxies only; -1 for stars and SNe)
truth_type	long		1 for galaxies, 2 for stars, and 3 for SNe
match_objectId	long		objectId of the matching object entry (-1 for unmatched truth entries)
match_sep	double	arcsec	On-sky angular separation of this object-truth matching pair (-1 for unmatched truth entries)
is_good_match	boolean		True if this object--truth matching pair satisfies all matching criteria
is_nearest_neighbor	boolean		True if this truth entry is the nearest neighbor of the object specified by match_objectId
is_unique_truth_entry	boolean		True for truth entries that appear for the first time in this truth table

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SDM Schemas is maintained by Rubin Observatory.